Burnt out and had enough at 32?

I’m 32, I have 2 kids 11 and 8. Separated from the kids mom but I have a new partner. I have a house 400k, 200k left on the mortgage.

I have a business which when all is said and done I could probably walk away with £3 million if I sell. The problem is I don’t know what’s next, I have ambitions to travel. But im not going to just leave the kids. So I would need a plan for the next 10ish years, and then the kids could come with me / Go off to college / uni etc.

Just feeling a bit lost / burnt out. And not sure where to turn? I don’t don’t if FIRE would be the option. Or I would sell up and then work again after a bit of a career break. But I feel like you people are the right people to ask