Dealing with Anxiety at Work

Looking, trying to look and being unable to even try are important differentiations. I am in a similar situation. Job exacerbates anxiety, however, I am aware that many jobs would be better and available. Doesn't make it easier to look for/at them nor am I able to apply. I'm working on reducing anxiety in current situation in order to escape. Been nearly 4 years.... Maybe longer.... Sort of makes this advice feel less like it's a good approach.