Here's another question to think about... why should being told you only have 10 years make any difference at all? What if you only have 5?? Why should it matter how long you think you might have. Our time on this earth is not infinite. One day there will be no tomorrow. I am not saying this to sound morbid, I am not saying this to be depressive. It is simply the facts.
Get to work on your dreams... we are only here for a LIMITED time and you only get one shot! Get to work on the things you have been putting off... the things you want to do 'one day' in the future. Otherwise, you may never get there. The life clock doesn't time up.. it counts down. The only problem is you don't know when the alarm goes off.