Anxiety struggles

I recently have been dealing with a large case of anxiety. It started when the summer hit and school let out. I'm a fourth grade teacher and I love my job! However, summers are hard. Everyone says how lucky I am to not have to work and just relax. That's my problem, being alone and relaxing. Or being alone and Doing anything!!! I am working four weeks of summer camp but I still have a lot of free time on my hands... Especially when my friends and boyfriend all work. I need some advice on how to deal with my anxiety of being alone and how to learn to be alone and be okay with it! Please help!!