I would say that my profession defines me and I imagine that my desired new profession will not so much define me as just make me happy in my job and life. As you said - I'm in a position where I know the end is coming soon but luckily I can take a part of that old profession with me and transfer those skills to the new one. If the new one never got off the ground then I do have other skills to move in another direction but I know that I would not be as happy in the career. This is one thing that I agree with a lot of people on - having a backup plan - a second or third interest that can be made into a career.
USMCFLYR