Job has me frustrated. "..should i stay or should i go now!..."

I would not leave your current job until you have another. It's far easier to find a job if you currently have a job. Are you planning to work while attending school? Opening your own shop could be a great opportunity but be careful as you have to be willing to commit completely to it. Like 24 hrs... someone will see you when your at a recreational activity and ask you to drop what you're doing to look at their car. Then there are all of the issues like book keeping etc. Owning your own shop can be very rewarding personally and financially but it it takes a huge commitment. Be VERY CAREFUL about getting into business with a partner. It can work out well but also has the potential to be a disaster so just be careful in that decision. Does your school have business classes with the tech? Not knowing your entire situation I think I would stick it out where you are until school, trying to make the best of the situation. It will look a lot better on a resume if you leave a job for a reason like going to school. Then during school or shortly after make some long term plans and decisions.