Working as a Trainer?

Hi! I have been very interested in working as a Personal Trainer/Fitness coach for a while now. Only thing I’m very concerned about is whether I will succeed and manage to earn a great amopunt of money through this job only, since one of my goals are to live a wealthy life. So what do you go think? Is it very though to succeed in this industry nowdays, since it has grown a lot lately?
And also; what do you guys think is the best kind of education I should invest in to work as a trainer? Long term studies at a university or…?
Best regards/Martin!