Lifetime of regret

The biggest regret I have in my life is becoming a sonographer. I've been an ultrasound tech for 22 years now. I enjoy absolutely nothing about it. On my way to work each day I fantasize about getting hit by a car. I hate everything about this.

I've tried to change careers but I can't afford to take the time away from work to be a full time student. All the part time and online options lead to near minimum wage jobs. I can't figure out any way out of this stupid ass career. I've tried teaching and considered apps. Neither of them appeal to me either. I'm worried I'm going to die in this job and never enjoyed a day of my life. I don't know what to do anymore. I've spoken to counsellors and they tell me to reflect, have gratitude, pray, meditate etc etc. I've tried all of that shit and I still hate this.

Edit to add: management is not an option for me. 5 people need to die before I'd ever be considered for that and our managers are still scanning so it's not exactly an upgrade in life.