Be realistic about your style and look for well matched opportunities. In a manner similar to the personality check, the action steps combine with getting serious to provide a safeguard against getting caught up in illusions. An illusion is when the idea of something appeals to you, but, in reality, you don't like anything about it. When he finally got the bike he found he felt too exposed on the road and didn't like sitting in that position for very long. The years of saving and planning could have been spent on a more fitting interest if he had taken some action related to riding earlier.
Action is the element that breaks illusion into concrete terms.
Whenever you're tempted to build a fantasy, take some action on it when the first opportunity arises. Bring it into contact with reality and see what your reactions are. Your exploratory actions can be very simple. If you want to be a doctor, pick up a biology book and see if it intrigues you. If you want to be a track star, do ten pushups, or go for a run down the street.