I feel for you; I wish you all the best. I applaud your courage in wanting to make a change. I know how hard it is.
I am a physician, an occupation that is often thought of as lucrative and prestigious. It can also be a soul-killing burden if you do not feel a "calling" to the profession. Only later in life did I realize that I really wanted to be a writer/photographer. I have responsibilities that currently prevent my just chucking everything to pursue this dream. But I am working on the dream in parallel to my daily grind, looking to make a break for myself.
No advice to offer you--best of luck my friend.