The only advice I can give (I'm 29) is that my work life gets easier AND more productive when I think about it in terms of my path to the top of the mountain. S

The only advice I can give (I'm 29) is that my work life gets easier AND more productive when I think about it in terms of my path to the top of the mountain. So, pick a spot that you feel represents a point of accomplishment that you'd be happy to die having done (big goal, tombstone style stuff). Then as you approach your work, ask yourself "is this a stepping stone on my way to the mountain?" If it is, you'll find some reward in doing the work, as you feel like you have invested in yourself and your long term goals. If it is not, then you can measure that sense of frustration and now understand why you feel frustrated. And if you feel that frustration on a daily basis, it's probably time to get a new job.