Because there's nothing standing between you and your goal but a total lack of talent and complete failure of will.
Disagree. There could be a lot of things in the way of reaching your goals: age, health, etc.
What about luck
That depends on the restrictions you permit your government to place on you.
One of those sayings that sound right at first glance - until you think about it.
What can also stand between you and your goal:
- goal is unrealistic (aimed too high)
- accidents and illness (for a physical goal)
- lack of opportunity or just bad luck
Let's say you are talented and strong willed and young. You know you want to play pro football and have what it takes. Then a car crash turns you into a quadriplegic.