What does it mean that intrinsic versus extrinsic rewards?

Internal satisfaction is more sustainable than external rewards for long-term habits.

Example: A software developer pays herself ten dollars for every hour she spends learning a new programming language. For the first month, the cash reward drives consistent study sessions. By month two, she notices something: she skips sessions when she is tired even though the money is waiting, because ten dollars is not enough to override fatigue. Meanwhile, her colleague learns the same language by building a side project he finds genuinely fascinating. He stays up late not because anyone is paying him but because the problem itself pulls him forward. Three months in, the first developer has abandoned the habit. The second developer has shipped a working application and is already planning the next one. The extrinsic reward purchased compliance. The intrinsic reward produced engagement.

Try this: Pick one habit you are currently maintaining or attempting to build. Write two columns on a piece of paper. In the left column, list every extrinsic reward you currently receive or have set up for the habit — money, treats, social praise, streak counts, points. In the right column, list every intrinsic reward the habit delivers — feelings of competence, autonomy, connection, curiosity, flow, or satisfaction. If the right column is empty or thin, you have identified why the habit feels like a grind. For each empty slot in the right column, design one modification to the habit that could generate intrinsic satisfaction. Run the modified version for one week and note whether your motivation shifts from obligation to engagement.