People have always believed that execution ability comes from willpower and persistence.

But psychological research has found that execution ability is more like a trigger mechanism than a quality.
The brain is not good at executing abstract goals like "I want to lose weight," "I want to study," or "I want to write a thesis," but it is very good at responding to specific scenarios.
Therefore, instead of telling yourself "I will work hard," a more effective approach is to define a trigger condition in advance: if X happens, I will execute Y.
For example, "If I finish dinner, I will open my computer and write the first paragraph of my thesis."
This method, known as "implementation intention," essentially completes future decisions in advance, shifting action from relying on willpower to relying on automatic triggers from the context.
This simple behavioral design can significantly improve goal completion rates.