You're getting paid well for a full time job and "security"....
This is the time to get out of your comfort zone and do what you were called to do!!
You have a talent, now go out and do it. This is the time!!!!
I made the jump last year and I couldn't be happier. I waited 23 years to finally make the leap of faith. Now I love what I'm doing and only wish I made the jump sooner.
It's never too late. If you have a skill/talent at something, go out and do it. I'm rooting for you. Leave this toxic, slave driving, place and do what you were called to do!