I'm not sure if you're the only one. But I don't do this. I too have blocks that last a long time and make having phone calls with friends, family or anybody hard. But if my friends invite me somewhere then I try my utmost to make it. I hate it when people flop on plans made well in advance and I would never do that with my friends. If I were you, I would apologize to those friends who invited you in the past and present. Find a way to tell them you're feelings and fears and what's going on in your head. But also let them know that you still want to hang out with them. Those friends invited you because they want accept you for you. They want you around. That's not something you should take lightly. But I can relate to this post. I have the feeling that you have because I don't reach out to my friends. Very rarely. I'll never call them because I hate how difficult for me to talk on the phone. And I hate putting them through that experience of eternal static. I feel guilty that they're the ones reaching out me and never vice versa. I don't know why but I find it extremely difficult reaching out the people even via text. I think it's tied not being able to just pick up phone and call someone just to talk and ask how they're doing. And that I prefer in person interaction over texting or over video.