
"Without leaps of imagination, or dreaming, we lose the excitement of possibilities. Dreaming, after all, is a form of planning." – Gloria Steinem
Most successful people will be able to answer this question without even having to think about it. Because they've already spent time thinking about and planning where they want to be. They've worked out what's most important to them and they've set goals and made plans for their achievement. And, critically, they are taking action, usually massive action, to make sure it happens!
If you need help thinking about the next ten years, considering the other questions mentioned earlier about the past should help.