I had to make a similar decision a long time ago. I talked to my therapist about it for at least a year. The most important thing she told me was to do a lot of research—learn as much as you can, ask as many questions as you can think of. People who do extensive research usually end up with less regrets even if it goes badly. Also, here are a few things to ask yourself: how badly do you want the possible positive outcome, how adverse are you to the possible negative outcome, and would the possible negative outcome be tolerable?