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Two theories from psychology, two different researchers, one common answer to the same age-old question: where does real motivation come from, and why does it sometimes extinguish without warning?
There is a question you have probably asked yourself at some point, perhaps without formulating it explicitly: why do you do certain things with energy and ease, while others cost you enormously, even if you “should” want to do them?
It is not a problem of character or a lack of discipline. The psychology of the last five decades has a much more nuanced and useful answer.
Two theories, built independently by two different researchers, together offer the most complete picture of human motivation that we have. It is worth knowing both and understanding exactly where they overlap and where they do not.
Edward Deci & Richard Ryan
Self-Determination Theory (SDT), developed starting in the ’80s
Their question: Why do we do things?
They identified three universal psychological needs whose satisfaction or frustration determines whether motivation is sustainable or collapses. SDT explains the source and quality of motivation.
Albert Bandura
Self-Efficacy Theory, 1977
His question: How capable do we believe we are?
He discovered that performance and perseverance depend less on actual abilities and more on the belief that we possess them. Self-efficacy explains the mechanism through which self-belief influences action.
Self-Determination Theory: Where the energy comes from
Deci and Ryan started from an observation that sounds counterintuitive: external rewards can destroy motivation for activities you previously enjoyed. In a now-famous experiment from 1971, Deci observed that students who were paid to solve puzzles stopped doing them of their own initiative once the payment ceased. Those who were not paid continued.
The conclusion was not that money is bad. It was that motivation has a quality, not just a quantity, and that its source matters immensely.
SDT identifies three fundamental/universal psychological needs present in all studied cultures:
Autonomy
“I act because I choose to, not because I am forced.”
» Core need in SDT
It doesn’t mean always doing whatever you want; it means feeling that your actions spring from your values, not from external pressure. You can do something imposed and still feel autonomy if you understand why it matters and integrate it as your own.
Competence
“I feel that I am effective, that I am progressing, that I have an impact.”
» Core need in SDT
The need to master challenges and feel that abilities are growing. Tasks that are too easy become boring; impossible ones cause paralysis. The growth zone is at the border between the two—where it is slightly difficult, but achievable.
Relatedness
“I belong to someone; I matter to someone real.”
» Core need in SDT
The need for authentic connection, not popularity. The feeling that you are seen, and that your effort matters to people who are important to you. Without it, even success feels empty inside.
When all three are satisfied, motivation becomes natural and self-sustaining. When one is chronically frustrated, you feel that something isn’t working, and usually, you don’t know exactly what.
People are not lazy. They are unmotivated. And there is always a reason for that, linked to one of these three unsatisfied needs.
Bandura’s Self-Efficacy: What You Believe You Can Do
Albert Bandura started from another observation: two people with identical abilities can perform completely differently. The variable that makes the difference is not talent, but the conviction regarding one’s own talent.
Self-efficacy is not general self-confidence. It is specific to a context: you can have high self-efficacy in mathematics and low self-efficacy in interpersonal relationships. It is not naive optimism either; it is an evaluation, based on real experiences, of one’s own capacity to handle a situation.
Bandura identified four sources through which it is built:
Direct Experience
SOURCE 1 — THE MOST POWERFUL» Source of self-efficacy (Bandura)
You tried something, you succeeded, and the brain notes: “I can.” It doesn’t have to be perfect success. Progress and overcoming difficulties are what count. Every passed obstacle rewrites the internal evaluation.
Models around you
SOURCE 2» Source of self-efficacy (Bandura)
When you see someone similar succeeding, a key thought appears: “If they can do it, maybe I can too.” Not just any person can determine this. There needs to be a model you identify with. Too great a distance makes the model irrelevant.
Qualitative Feedback
SOURCE 3» Source of self-efficacy (Bandura)
Not “you are brilliant,” but “you solved this specific problem and here is why it worked.” Feedback oriented toward effort and strategy builds real self-efficacy. Vague praise does not.
Physiological and Emotional States
SOURCE 4» Source of self-efficacy (Bandura)
Anxiety and fatigue are interpreted as signals of incompetence: “I am shaking, therefore I can’t.” Managing your internal state before a difficult task directly influences performance.
The practical consequence: low self-efficacy doesn’t mean you can’t; it means you don’t believe you can, and this belief produces behaviors that confirm the conviction: you avoid, you give up quickly, and you interpret difficulties as proof that “it’s not for you.”
Where the two theories meet
Bandura and Deci & Ryan did not work together, and their theories are distinct. However, they complement each other so naturally that it is hard to speak about one without involving the other.
How they complement each other concretely
The need for Competence from SDT (Deci & Ryan) and Bandura’s Self-Efficacy speak about the same psychological territory from different angles. Deci says: “Humans need to feel effective; it is a fundamental need.” Bandura says: “Here is exactly how this conviction is built or destroyed, step by step.”
SDT explains why it matters to feel capable: because it is a basic psychological need, as real as hunger. Bandura explains how the belief that you are capable arises and how it can be cultivated. Together, they offer both the diagnosis and the treatment.
Practically: if SDT tells you that an environment frustrates the need for competence, Bandura tells you exactly what to change—what types of experiences, feedback, and models build the conviction that you can.
What you can do with all this in real life
- Identify which need is frustrated. When you feel stuck or exhausted without a clear cause, ask yourself: Are you lacking autonomy? Competence? Relatedness? The answer indicates where to intervene.
- Build self-efficacy through small, repeated experiences. Not through empty positive affirmations, but through achievable tasks at the edge of your current abilities. Every success, no matter how small, recalibrates the internal evaluation.
- Look for process-oriented feedback, not result-oriented. “You handled moment X well using approach Y” feeds both competence (SDT) and self-efficacy (Bandura). “Bravo, you’re good” does nothing useful for either.
- Explain the “Why,” not just the “What.” When you understand the meaning of a task and can connect it to your own values, you give yourself autonomy, even when the task wasn’t chosen by you. This transforms compliance into engagement.
- Pay attention to the environment, not just yourself. Both SDT and Bandura emphasize that motivation and self-belief are not fixed traits; they are responses to context. An environment that frustrates basic needs can demotivate anyone. You aren’t broken; it might be the environment.
Deci and Bandura didn’t offer you motivation recipes; they offered you something more valuable: a map of what the human psyche needs to function well. You now know that you need to feel that you choose, that you progress, and that you belong—and that this conviction that you can cope is built from real experiences, not positive thinking. If motivation has disappeared, it’s not a problem with you. It’s a signal that something in the equation is missing. And that, unlike character, can be changed.
