We tend to believe our habits are a product of our motivation, talent, and effort. Certainly, these qualities matter. But the surprising thing is, especially over a long time period, your personal characteristics tend to get overpowered by your environment. 

What often looks like a lack of willpower is actually the result of a poor environment. Life is a game and if you want to guarantee better results over a sustained period of time, the best approach is to play the game in an environment that favors you.