I've just made a step - but not a leap.
My employer, realising how miserable one of their middle managers had made me over six years let me work Monday and Tuesday, the rest of my week is pure joy - making things, deer management and spending so much time outdoors I could almost get bored.
We are (a bit) poorer, I am happier, I go into my kids school more, my wife and I spend more free time together.
You'll wonder how you managed to stay with it so long once you have done it. Or how you managed to fit your work in with the rest of your life.
All the very best and I hope it's as positive for you as it has been for me.