How to become likable/less selfish

I am someone who is really bad at socializing. People say I’m a good listener and sweet but it’s rlly bc I’m a people pleaser. People say I’m sweet but I feel like no one actually wants to be around me bc I’m not fun and too uptight and always thinking of how I’m being perceived. I’m super selfish I feel like. I’m cold and it’s just hard for me to connect with people and be less prideful/let my guard down. How can I get better? I do realize I need to go to therapy.