Help! Can anyone relate?

Ok so I realized that I have a problem. Basically my issue is that I’m scared to be happy and relax. I feel like if I’m not stressed and/or disappointed with something then I have to be. I don’t know why I do this! I’m not unhappy you see, it’s just when I’m having a good day I somehow I can’t just say I’m having a good day, I have to ruin it for myself. Maybe because I’m so used to that? I’m not sure. I just want to let myself be happy Instead of making myself feel guilty about relaxing/being happy.