How do I stop irrational thoughts? 

I have low self-worth, low self-confidence, and I constantly feel like a nuisance. I recognize that even though no one in my life is telling me these things. For instance, I have Covid atm so no Christmas for me… I got a lot of christmas texts and my bf even dropped dinner off for me. I felt loved. But midnight hits and I see everyone else having fun and enjoying family and friends and my gut reaction is “oh, they did that stuff to keep me busy.” “they don’t need me over the holidays” and “they were faking it”. I know it’s not true but I can’t seem to sway away from those thoughts. 

I’ve convinced myself no one loves me, i’m not worthy of love, and I am annoying and that every bad thing is my fault. I know it’s not true but I can’t seem to convince myself otherwise. It has made me so depressed for a long while now. How do I stop thinking this way?