Education and Careers

Hi, I'm turning 30 and I'm having a major crisis.
I've been working a normal 9-5 corporate job for few years now and i don't feel any personal growth / no promotion / repetitive boring tasks everyday etc. up to a point where i feel depressed and have no motivation to live my life. I just don't see myself belonging here...

I did consider about going back to school as i think it's the only way out but the problem is i can't really decide which major to take on. Kind of did some research on my...