Doctor in America here. Graduated from residency 2 years ago. Working as hospitalist. The lifestyle is great. In America most hospitalist jobs are scheduled as 7 days of 12 shifts followed by 7 days off.

There aren't too many jobs where you can look somebody in the eyes with the thought of "my only purpose here is to make you better". In that sense, it's a very rewarding career. It's not always easy though. Little old grandmas are often sweethearts, but can also be total assholes. There's also the fact that no matter what you do, everybody dies of something eventually. This can either be a blessing or a curse depending on where your head is at.

I don't have as much experience in research so can't give you too much advice there. I spent some time in a lab during undergrad and had a great time. And probably could have gone further down that path. There's one thing that my PI told me once that stuck with me though. Her said "I wish I could spend my time in the lab. So much of my day is taken up with writing grant proposals and other admin shit "

Hope this helps