Step 1: Stop going to a place you hate everyday.
Step 2: Take a big chance because you deserve to be happy. If you are never famous that's okay. If you never sell a piece, that's fine. If you are never happy, that's what's not okay.
Not every day is going to be awesome. Some days you are not going to feel like it, some days you will go to work and not be satisfied with what you make. But, you may love it. You may finally find your stride and if you stop being hard on yourself , you may realize you are exactly where you want to be at a pretty good time in your life.
You are not too late as long as you have ideas in your brilliant head and the willingness to put yourself out in the world.
I hope, hope, hope with all my might that you find the passion and confidence that you deserve. You will always find me on your side, every single step of the way.
Congratulations on leaving an unhealthy place. You deserve better.