I feel nostalgic and anxious...how to get over my feelings ?

Wow that is an awesome and I am very glad you said this, it got me thinking about many things! And it is very true in some aspects of innocents to where we are now.

You seem to fear the what if, what if I am evil, what if I do something wrong to a woman, what if what if what if. Just because you never have spoken to a woman doesn't mean you will be horrible at it, I mean come on. They are the same species as you just different genders. I get nervous too, talking to a girl, however it is all good! You gotta get up and try, put a solid effort into it!

Fear is both good and bad, good fear is when there is a immediate physical danger. You have nothing to fear since there is no immediate physical danger, your character is at risk of danger. What is needed is to fight this fear, fighting fear is by Action! To combat this fear you need to know who you are, what your values are, be strong in yourself and build up your self esteem by loving, believing, and supporting yourself! When you know who you are, these thoughts will come (which are of fear) and you will reply in a solid stance and say, "I know who I am and will not be tempted by your threats!"

It is never to late to start again! Never tell yourself you can't do something! The only person limiting yourself is you! Why would you get in your own way of happiness? You wouldn't deny any one else happiness right? Why should you do that to yourself? That is why you need to love, believe, and support yourself!

Let go of your ego and boost your self esteem! Your going to go into action and you might get hurt! That is okay, you must let go of your ego and not be afraid of getting bruised! Remember you may get hurt emotionally on your ego, but this is not immediate physical danger. Don't fear opening yourself up, don't fear putting your ego at risk!

Pursue the best version of yourself! Build others up and yourself!

Best of luck and God Bless!