I've almost by accident arranged to start a part time research / academic role (PhD student) in January. I can also manage financally. This work will help fix an urgent practical problem in my country and wider.
Am I burning with passion and leaping out of bed each morning? Not yet.
If I took a wrong turn here would it be disaster to change my mind? No.
Give it time. We're both making a big change after many years and I think that amongst other things the supertanker in our heads takes time to change course. It may not be enough, but I think time is necessary.
(Feel free to drop me an email - see my home page - if you wish.)