How to be single ?

Hey girls !

I just noticed that all my life has been evolving around guys, everything I do is for a guy, he can be my bf, my ex or just a crush.

I've never actually been single with no guy on my mind. Always thinking about someone.

I wanted to try to not think about any guy, but whenever I meet someone new, either I don't like him, or I immediately start daydreaming about us in a relationship.

I don't know where to begin ? What should I do to just be ME ?