Work out whats important, plan the change if you need to make adjustments (you cant just walk out of a mortgage tomorrow if you like with your family in the house..well you could, but I dont recommend it from experience) then make it happen.
My dad did the very same when I was 18. Left his high paid job and bummed around the Med. He reckons it probably saved his sanity….others reckon he was a self centered tool. Either way it was his choice, his life etc… I dont see that it made him happy, he would still like the cash to do what I can now do, but thats part of his sacrifice.
I like my work. Its bloody hard, infuriating and frustrating. But I have no intention of retiring, each to their own though. If I hated my job I would be out in a flash…..
Jas