It makes sense that the frustration feels intolerable. You are like a snake shedding his old skin right now -- It feels awful to be stuck in a suit you've outgrown when the new skin isn't fully developed yet. Trust that THIS IS the process of transformation. Welcome the frustration. Allow it to be there. Write about it. Talk to it. Walk with it. Yell at it. Dance with it. Make art that speaks to the experience of it. Welcome it as a muse and a teacher, because you're here for a reason.
I want you to imagine for one second that life is a little like a video game. You can't get to the next level until you collect the coins of the level you're on. The coins come from finding the 'purpose' in being where you are. When you can find the lesson, or the teaching of the present moment's contrast, and make peace with the un-manifested desires it provokes in you, then you collect your coins and move to the next level. But know this: the next level requires you to ACT AS IF you are the guy who is PAST this stuff that's currently frustrating you.