The Broken Parts

I've discovered that the parts of me that need fixing the most are my self esteem and my way to deal with anxiety. 
I recently went to look for a new job. I was driving along and I started to feel very stressed. I didn't know how to calm myself down. I got more and more panicked.  I started to cry and my hands were shaking.
I think it was a matter of me not having the self confidence to actually apply for work. The thought of being the new person, of learning a new role and working five days a week was terrifying. 
I need to find a job that will make me happy. Something that wont cause me a lot of stress and will be rewarding.  A job I can look forward to each morning and will be fulfilling. 
I'm not sure exactly what that is yet or when I'll be ready to find it but I'd like to know sooner rather than later.
I'd like to find a way to feel better about myself and feel more confidence.  I'm not sure how to do that.  How to change the way I think about myself.  How to think that what I am is good enough.