Playing golf alone

I’m in a sticky situation. I have been dedicated to improving and playing as much golf as possible to do so, but it’s difficult matching up schedules with friends. I feel I need to play more golf alone to improve, but I find that alone I get more in my head and take the game too seriously when I don’t have something to take my mind off the game in between shots (friends). How do I get over this?

P.S I’m a 20 hcp, playing for over two years