You have to start by feeling worthy. And that you are loveable. What was the first memory you had as a child? Where did this guilty feeling come from? You are worthy just as you are. You do not need to be married.
Look, I married a person in my 30s because she was the only one who ever looked my way. I became successful, we had 2 kids, and she stayed at home. 10 years later, she drained my accounts, divorced me and put me in prison for not paying her alimony, which as more than my paycheck. She turned the kids against me and they started to hate me and wouldn't see me for 4 years.
I couldn't change jobs because I had to pay her. I had to work 3 jobs 100+ hours per week to pay her attorneys because the law forced me to pay her as well as my attorneys. She dragged the divorce on 4 years, I lost everything, and my kids think I am a monster.
So consider yourself lucky you are not married.
And oh, you are enough and worthy just as you are.