The thing about people is that we never want to just do one thing, we want to do all the things we can. One person doesn't just want to become a lawyer, they want to travel to Australia and learn French and buy a kitten and become famous and write a book and own a mansion too. So really what is their dream and how can they achieve it?

We are all controlled by what we want, and if we can't prioritize the things we want then how will we ever achieve them? If we had just one dream, that our lives and the people within them depended on how would you achieve that dream? Could you?

If you were to do this would you drop everything else and aim for this goal as quickly as you possibly could?
This is the ultimate way to success. If you can focus on one goal, it becomes much more achievable.

But as humans, we cannot stop ourselves trying to be overachievers and doing everything. How can we stop this?
1. Remember that big goals are worth ignoring small goals for
2. Do anything that isn't a priority later
3. Forget the things you 'also want'

Sadly, no one can predict who will be the successful entrepreneurs, the rich, the famous or any other goal you could achieve. You just have to keep trying.
Good luck following your dreams.