Finding New Friends

I recently retired from my job of 40+ years and want to expand my social circle. The desire is great, but my fear is stronger.

I have thoughts like, “If someone gets to know me, they won’t like me,” and “I don’t know what to say to someone new.” These aren’t helpful, but I feel as though there are other, more poisonous lifelong thoughts also holding me back from acting that I just can’t put my finger on.

How can I get to the root of my reluctance and begin moving toward the result I want?