I have never been in this position but I have had a crossroads. My advice is to take small steps and get to know yourself. I got myself a p/t job after being at home for 20years and being over 50. Best thing I ever did, low paid and no social life but I just love going in each day.
I am also going to my first Supper Club next week....do small things just for you...go for a coffee, join the library, the weather is lovely, walk to the shops, I hate exercise but walk every day to the shops it clears my head.......good luck..