I'm in my early 30s. Good job. Good salary. One beautiful 4 year old. Have been single a few years. Don't want a relationship but desperately want more biological children. It won't happen for me as it's not possible, so I guess I have to accept my son will be an only child. I agonise over it. I don't know how to move past it. How do I stop obsessing over having another child? It's a horrible feeling that I would like to just go away.