Self pity is ugly, self centered and leads nowhere you really want to go. If you make that many bad decisions, you're probably doing it deliberately. Figure out what you're getting out of it - then find some better reward to aim for. "I'm going to fail, so I might as well just go ahead and fail" is not a good philosophy for a fulfilling life.

Besides, driving over a cliff is self centered and rightly illegal, because of all the messes everybody else has to clean up afterwards. We're all going to be pretty pissed off at you if you do that.