I'm a very anxious dude and I tend to overthink.

On a date I'm constantly talking to myself in my head 'I want to kiss her, when do I go for it, how should I do it, etc' these thoughts make me very nervous.

I always overthink and overanalyze her behavior (if she's intimate, if she's making eye-contact, etc). Most of the time when a date is over I'm sad because I didn't make my move..

Does anyone have some advice on overcoming this fear, maybe some tips on making the move?