Whether you "fail" or not is self-defined. What else are you doing with your time besides trying something you would enjoy? If you want to go to school, do so! It is like people who do not write because they are afraid they won't be any good; that's not why one writes; one writes because one wants to write. If one wants to study X subject or get Y job that requires X subject, then one focuses on the want and moving toward it and the other stuff falls in place.

If you were going to school, you could concentrate on your school work (instead of worrying so much about the drama at work) and you would not notice the stuff going on around you at work so much. Do your own thing, always! Make a plan for yourself and what other people are doing doesn't apply because they're not part of your plan.