You have more willpower than you think, according to Jason Hreha:
Recent studies have failed to replicate the finding that willpower is, indeed, a limited resource. Other research, done in 2013 by Carol Dweck and colleagues, has shown that one’s beliefs about willpower affect how much willpower one has. Far from being a limiting factor, willpower seems to be a reflection of one’s beliefs and biology. Beliefs are things, and they can change how we survive and thrive within the world. If you see yourself as containing a limited amount of self control, it’s unlikely that you’ll make the extra effort to forgo dessert, or hit the gym, since you’ll “burn out anyways.”
Even though a substantial amount of research has challenged the idea of limited willpower, millions of people throughout the world have incorporated this spurious idea into their mental models of themselves and people in general. … There is no greater shackle than a false idea and, as the willpower field shows, ideas once “true” can become questionable, even false, in due time.
The Dish 