I agree with letting things sit a bit after she moves out. I think you need to for more then just a few weeks though. And by sit I mean give yourself space and just do your thing and let her do hers. Take the time to figure out you. Maybe try some new things and see what life has to offer rather then be jealous of what someone else has or is doing. You only control you.
I understand your fears and how they can hold you back. Heck I lived it for a long time and they just feed negative emotions (jealousy, anger, depression, etc...). Thing is you can sit there and let the fear control you or you can face them head on and move forward. Like BD mentioned, it's fine to feel these things, just make sure you let them go and don't let them control you.
Personality is who the world sees, character is who you are
