Why do i get more motivated when im down?

does this happen to anyone of you?

here is the problem, i noticed that i get more motivated to do creative things such as write and essay, make crafty stuff or take a hike when i’m really pissed of. my concern is that, isn’t it a bad habit to get motivated only when your down? can anyone suggest how can i make this a positive trait or how can i be motivated even if im not pissed off?