Hi I am a very late bloomer meaning too decide to become a Dr, I'm 44 yrs old but I have the time with a?

loving wife that make good money in the Federal Gov'mt but I will be starting from ground zero...it's my dream but I had a lot of thing that happen in my life that detoured me from achieving this dream, but now that I have the time it seem I dont or maynot have the life span....SHOULD I DO THIS? you being a Doctor yourself.