Having experienced social anxiety myself, my advice is to make sure you leave the house at least once a day. Even if it's just to walk down the street or go to the shop. During really bad periods of my social anxiety I wouldn't leave the house for weeks and that just made it so much worse and made it so much harder to leave the house for something really important. As for the annoying thing, I used to think I was really annoying too - like nobody wanted to hear what I had to say and that nobody cared about what I had to say or that I was boring. So, my therapist filmed a conversation I had with a stranger and showed my the video, so I could see what I was like from the point of view of somebody else. It completely changed my perception of myself and made me much more confident that I was a mildly interesting person who actually had pretty good conversational skills! I would suggest trying something like that to see if you are actually annoying (unlikely), or whether you just think that you are (aka you have a misconception about yourself).