I couldn't go to work
Why couldn't you go to work?
I don't think I fit in this group
I'm sorry you feel that way about your job.  You should consider trying to get a new one if you don't feel you fit in where you're at currently.  Nobody should continue to go to a job they hate in this day and age.
But I'm so good at it
If you feel you are good at your job but you don't like your work environment then you can always apply to a new place. Is it hard to find a new job similar to this one?