I think you spend time with anyone who has had serious success in the strength field you will see what separates them. It is something that can not be explained. The fire that burns inside to reach your goals becomes uncontrollable. I have changed my entire life to have a chance at reaching my goals.
I heard an interview with Donnie Thompson one time that when he was chasing 3k total, he sold everything and built a gym. He would have to beg people to train with him, because he couldnt find people dedicated enough to stay through workouts. He eventually got to his goal.
I am not sure if it is something that can be taught. It is something inside of you, that will to win. I have been around this long enough that I can look at a mans face and eyes and tell you if he will get the lift. The people who are crazy successful have "IT". It is something that you cant describe, but when you meet someone with "IT" you will know.
I played football for the greater part of my life. During that time I played with a handful of people who had the "IT". When it was on the line, they wanted the ball, they wanted it ran behind them, they wanted the pressure. Same in lifting!
Sorry got on a little ramble there haha.