To be successful, you need to really work hard. And every study in the last 50 years says that successful people say, "I am not smarter than anybody else. I just want to work harder and longer."
What would you dare to dream if you knew you wouldn't fail?
Lack of planning is the cause of most failures.
A goal without a plan is only a dream.
Intellectual capital is the most valuable of all factors of production.
Persisting through lesser difficulties builds your capacity to persist through greater difficulties, and achieve even greater things.