Exactly. You can “have a vision” to accelerate full speed and hit the hard wall and just before going full throttle you are offered an opportunity to enter an open door around the corner which you have never even thought about. And that door helps you discover a new vision, that might stick for lifetime.

Also, while the original advice about “vision” sounds reasonable, it also sounds a bit dogmatic. The filpside of “career vision” is “tunnel vision”. And life is not deterministic, it has a much more probabalistic nature. Hence, curiosity and open mind.