Ive talked myself out of medicine more times than I can count. I've also talked myself back into it a few times. This is a real internal debate every person should have and I really think that until you get that one moment that *drives* you, you'll never fully know if you're making the right decision to sacrifice so much of your life for a profession.
People ask why physicians get compensated so well. I always argue that it has much less to do with the life and death matters they deal with, but instead has to do with what they sacrificed. In order to get to where they are they *literally* have given up >7 years of their life. The best case scenario for when you can be a fully licensed physician is at age 29. Most people are going into their early 30s by the time they are done. It is an absolute sacrifice. Anyone who is single in medical school can tell you that it destroys any real hope of a healthy relationship with anyone (romantic, or family) until at least 2nd year of residency. You lose track of many major events in the world. You die for 4 (or by my calculations 7 to 10) years right in the middle of your life... but it gives the opportunity to live for a lifetime. And the thrill of doing this, even at the 3rd year student level, is intense. With that all said: there is no shame at all in using logic and rationality to urge yourself away from it. The sacrifice of it all is not worth it for many people.
I mentioned earlier that there are moments that drive you. For me it was constantly debating if I truly wanted to do this. Doubting it, doubting myself. But I always took for granted that I *could* go back to it. Then one day an advisor told me, with absolute confidence and no grey area, that I could never go to a medical school. Don't ever tell me I can't do something. It was being told I couldn't have it that made me finally realize how much I wanted it.