How do I quit my toxic company to be in a better place?

This is my 2nd year in this company and soon going in to the 3rd year. When I first applied & started this place, all I had in mind was that I needed a job. Plus this company's benefits were pretty good compared to other places. However, I now see that wasn't the wisest option as I've seen this place go further & further way from my values and beliefs. Around the beginning of my 2nd year here, I did try to quit. However, with my parents highly against me quitting without a next job or plan set, I ended up staying. And my direct boss offered to help set a more defined career path. Around 8 months have passed since then and I want to quit again. My boss didn't keep his promise and in fact basically left me to take care of his project that is currently failing. As well as putting me in charge of his most annoying client. This time I plan to quit by going to get my MBA. However, the atmosphere here doesn't support getting high education. They suggest staying and they say that the experience in this company is as good as getting a MBA or masters degree. (YES I ACTUALLY heard this directly from my supervisors and the president of the company.). How can I find people to be my recommenders or quit without making my parent's so uneasy? I realize that this is my life and that I don't have to follow my parents, but they are a big part of my life and I don't want to do anything that is highly against them. But one of my major reasons to quit is because of this toxic company culture and supervisors, I feel my health (physical and mental) deteriorating. The feeling of being hopeless and negative has grown much bigger than before. Also, why am I so hesitant to quit? Is anyone else like this?