How do we contribute to our own lack of willpower?

There are factors that can amplify our lack of willpower, even if we are not inclined towards it - and especially if we are. For example, hunger. The brain needs glucose to function. If you are hungry, your body tries to preserve vital functions, and first of all, it shuts down higher brain functions. Another factor is stress. The stress mechanism kicks in when we need to react quickly. Therefore, during stress, all secondary functions are also shut down, leaving only the most essential ones at the moment. And we become more prone to impulsive behavior.