I don't know what I want to be when I grow up...

I want to build a career. I need to support my kids & myself. I want to show my kids that we can be anything we want to be. But I don't know what it is I want to be...

I have thought of psychology - grief counselling especially...
I have though to law.
I have thought of medicine - it's what I always wanted to do. But at 42 am I too old?

Be my career guidance officers. I have good people skills, I am intelligent. I have way too much life experience

What do you suggest?