[solson]

From my research, gray hair is genetic, but stress can trigger changes.

I've been a computer geek since I was 7 or 8. I started graying at 16. I'm 41 and my hair is completely white now. I wouldn't worry about it. Your only problem will be how first impressions go. But if you accept yourself as you are, it won't hold you back.

I just cut it really short now.

It's like baldness, it is better to accept it with some dignity than look like an insecure dope with a toupee or a comb-over.