I always blamed my feelings (just like yours) on the stress I suffered from having a partner with dp. However, we are now broken up and I still find I'm worried about doing things that should be making me happy, like seeing friends, shopping, etc. I keep saying I want to make more effort with my friends, but then when we actually make plans, I try to think of excuses not to go. I feel horrible for doing it and then, if I cancel, I sit home feeling bad for not going! I wonder how long those feelings were there and if maybe I had this problem longer than I'm thinking? Although most times I actually enjoy myself once I'm out. Does your friend know you get anxious? Having her aware and able to support you might help. Just know that you're not alone in not being able to fully enjoy all these things other people do!