[Plato]

We are creatures of habit. We experience discomfort and anxiety when we break a habit, even when it's something we want.

When people become rich for the first time they often freak out or become depressed. It's illogical, surprising if you don't expect it and most importantly it's temporary.

Your situation is similar.

This is not unusual. Just an obstacle that will dissolve as making out with women at parties becomes normal to you.

Btw, there's worse to come. When you actually start getting laid you'll likely feel very weird after. Once the new habit is established you'll be fine.

The message is basically to push through it. Do what makes rational sense. Try not to take too much heed to feelings like this.

edit: A massively effective but simple tip is to take some time visualising how you want things to go. It will help you clarify in your mind what you're trying to achieve. It's like programming yourself to be a guided missile towards your goals.