I hate being Antisocial

I go to the store and I can’t even look people in the face, so I look down or away. When I’m in class, I barely speak, even if I have a question. I’m afraid of embarrassment and awkward situations. Three years ago I was super outgoing. When I got with my now husband I noticed I developed a lot of insecurities and stop hanging with my friends due to a request that he made. He is my first for everything and I was naive to a lot of things. So basically I lost myself. I always think about what my life would be like without him. Our relationship right now is great, even though I’ve been through a lot of bullshit with him before getting here. Back to the subject at hand, I’m antisocial and I hate being this way. To stop being anti social is easier said than done. Is there anyone on here who has triumphed through anti social behavior, how did you do it?