I'm scared and stressed.

My new job is quite stressful and has given me some challenges. I made some mistakes and I felt stupid. Not to fail to mention, one of my coworkers (has been on the job for years) and some of the other people on the job have spread the gossip about my mistakes. I was embarrassed and felt to some degree wounded. I don't know why she does not like me and I try to make nice but I hate this woman. Sigh. I also don't want anyone to think I am incompetent and not safe to work with. I really want this job to work out.
I am scared that I won't get back to the skill level I used to be and I won't be able to revive my career. Furthermore, I am trying to get back on financial steady ground. I only have about $32 to my name and I can't afford to lose this job behind a coworker who is out to get me. Sigh.