Gather real-life information for better decisions

Forget your “gut feeling.”
When you want to decide something for which you say, “I can’t explain exactly. I just feel it in my guts.”, you try to predict the future without any practical knowledge about it. You should test your assumptions before you commit to something.

Go out and try it yourself.
If you’re unsure whether you want to be a psychiatrist or not, work first in psychiatry for a few weeks. It goes the same with almost any field. How could you make a lifelong decision without any experience? It's better to work for a few weeks—even for free—than to spend years studying something that isn't right for you.