To overcome an obstacle in ones life by seeking out the cause of the obstacle and doing everything possible to eliminate it. Powering-through can help to resolve almost every possible negative endeavor. A misconception is that being passive and allowing time to solve problems is also a form of powering through, however this is incorrect and is only believed by p.p. headed idiots.
Person 1: Dude, my parents found my stash but I convinced them that it was oregano... I really powered-through that problem.
Person 2: I thought "power-through" meant letting time pass and hoping that the problem resolves itself?
Person 3: No, only dumb kids with under-stimulated brains think that.