Kelly,
If they really did laugh at you when you left, then that's only a sign of empty-headedness on their part, as far as I'm concerned.
Maybe your next job doesn't have to be the "perfect" job. How about an "interim" job? A "breaking out of prison" job? A "transitioning from my old life into my new life" job. See... if it's just a job, then it doesn't carry along with it all the weight of your past.
If you will make up your mind to allow it to be "just a job", then you'll be free, I think.
But if you are determined that it must be the ideal, perfect job (to impress your mom or whatever), then you've saddled yourself with a huge burden.
Hope that makes sense.
Love,
Carolyn