This is the biggest killer in advancing. The little steps to success all add up in how we set our minds to think, and perceive things. If this was not a big problem, then many of us wouldn't be stuck in the rat race.
But the mind of super achievers is great. The hard fact is - success is not for the faint-heartened.
When you push yourself to get things done, this'll become a habit, and you'll find yourself achieving more and more. This is actually related to the parable of the talent - to those who have, more will be given unto them!
Until you start the "big" step, you won't achieve much!