Actually, when I read that you were a house painter and learning to be a property manager I thought I would like to have those skills. I wouldn't know where to start. I have other skills, but with a house I need to sell, your skills could be really useful for me right now.
You have some real strengths. If you are serious about what you do and motivated to do a good job, you will do well. It sounds like you like your work, right?
You might like to take a look at the Psychotherapy forum too, and look at the list of cognitive distortions (It's thumbtacked to the top of that forum). See if any of those look familiar to you. You sound like someone with a lot of potential who is taking things really hard right now, and making some assumptions about how other people perceive you.
Welcome to PC! I hope that you find what you need here.

Rap
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“We should always pray for help, but we should always listen for inspiration and impression to proceed in ways different from those we may have thought of.”
– John H. Groberg