Hey guys, I'm in an unfamilar situation. So in short I have a crush on a girl I see in a professional setting (university)

Thing is I have been in deep grind mode for a lot of months, years even. So no fun, just work and study. Always said to myself that I don't want to be serious with girls unless I meet a woman, that I want to have my kids.

Anyway I meet this girl while I'm about to start my masters, I'm 27 she is 21. The thing is I got totally knocked out emotionally. It's like I got paralysed realising I have kept this thought in my head 'as soon as I meet a woman which meets my requirements, I will take her. Simple as that'. However I have realised that this was an illusion. I will not see her again when the semester is over unless I do something. And I have not. No matter how hard I try, I fall back to my low self esteem days. I expect the girl to take the lead, but this isn't naturally and I know that. I can not live with myself if I don't do anything but no matter how hard I try, I freeze.

Sorry for the long post with too few paragraphs. Guys I need your imputs.