Yeah. Lots of things. I'm a complicated person full of contradictions, foibles, and flaws. For every door I open, another one closes. There's no way to do everything I want. So I follow the path that I think will lead to greatest long-term happiness, even if, in the short-term, I have to make sacrifices.
Exactly. We are not machines and we can't program ourselves even if the mass media and the motivationnal websites and that under 24 startup guy who built a webpage would like you to believe it.
Perhaps this advice works best with people who have no self-destructive desires. For those of us who are merely human, though, we have to compromise.