Leaving my comfy, well paying job to pursue my dream and I'm terrified.

I officially gave notice today and honestly it's all hitting me. I'm leaving my very comfortable office job to go to flight school to become a pilot.

What if I fail? What if I burnout? What if I'm not good at it? What if I wasn't meant to be a pilot? What if I never get a job as good as the one I had? What if something comes up and I blow through my savings?

These are all things I wish I had thought about before investing more in to myself.

Just a rant since no one around me is very supportive of my decision and have all but told me I ruined my career and life.