I guess few people get what they want, as I crave for more alone time and hate socialization.

I haven’t gone through the same transformation, but here is my recommendation: find something you truly want to build, or change, or whatever, and go for it. You are now free to do whatever you want. Trace your thoughts to your youth, to your childhood, and find something you were excited about, long before you met your sweetheart, and go for it.