It is facile to imply that smoking, alcoholism, overeating, or other ingrained patters can be upended without real effort. Genuine change requires work and self-understanding of the cravings driving behaviours.
Charles DuhiggIf you want to do something that requires willpower - like going for a run after work - you have to conserve your willpower muscle during the day.
Charles DuhiggTypically, people who exercise start eating better and becoming more productive at work. They smoke less and show more patience with colleagues and family. They use their credit cards less frequently and say they feel less stressed. It's not completely clear why. But for many people, exercise is a keystone habit that triggers widespread change.
Charles Duhigg