Hey Sidney,
I hate to say it but the odds are you will get dreadfully sick of any career after a certain period of time. In my case I just turned 40 and have been an editor/visual effects artist since I was 19. While I love the challenges of my job, not to mention the income level, I am getting tired of it. I think it's simply doing "something" for 20 years that begins to wear on a person. You get to know the ebbs and flows of your industry so well it ceases to be interesting. This feeling has led me back to school, taking a smattering of classes at a local community college that fit in with my work schedule so I too can discover what I want to do next. There is a book I read recently:
Amazon.com: Shop Class as Soulcraft: An Inquiry into the Value of… that has given me some thought into doing something more visceral but I'm not quite sure something like that is right for me. In the meantime visual effects is starting to get a little more exciting again. 3d film making is like the wild west and nobody really knows what their doing (don't tell Michael Bay I said that!
). In ten years who knows, maybe I'll open up a motorcycle repair shop like the author of that book, at least I will keep it interesting!
Good luck,
Michael