The best advice I could ever impart to you is 'Perspective'. Your work life AND satisfaction with your job can irrevocably change for the positive if you can tap into the power of perspective.
It is not hocus pocus. Reality is that perspective, attitude and the ability to find the solutions in a myriad of problems can positively impact your work life AND your satisfaction with work.
We get over wrought. We get stressed out. We look at a pile of work and see the impossibilities rather than the possibilities. We find it easier to locate the limitations when we could be MORE valuable to our companies if we could find the opportunities. They are certainly there waiting for you to identify them.
Now- tis true that you can let situations and circumstances drive you into a bitter and unhappy 'hole', but my advice would be to dig yourself out. YOU are only an obstacle rather than a solution enabler if you are spending more time talking about the issues rather than focusing on risk mitigation and the solutions.
Turn your unhappy with work perspective around. I didn't truly learn the art of perspective until I began traveling to third world countries. I have, yes tis true, worked myself up into a flurry over insignificant concerns in the past. After witnessing large numbers of people with illnesses that they can't afford to treat, and meeting hundreds of little children on the verge of starvation- I came to realize that I am blessed beyond belief. I can find perspective now in many circumstances.
Find your true north and point your perspective and attitude in a positive place. It will benefit and bless not only YOU, but also those around you!