Question of the week:
If you had to go back to your first day of medical school, would you do it all over again?
The question is not whether you're happy you're where you are right now. The question is, would you go through all that work again to get to where you are right now?
You could keep all your knowledge of what med school is like in terms of the workload, but all your medical knowledge would be lost. So you'd be starting over from scratch in terms of learning.
If your answer is no, then what would be the earlier point you'd be willing to start over from?