In order to achieve something, you have to do something yourself to do it. You can not just sit there and let someone else do it for you, because then it would not be your achievement, it would belong to the person who actually worked for it.
This is kind of what Frank Kafka was trying to say when he wrote "Before the Law". In that story, there is a man who wants to go through a gate, but there is a door keeper that will not let him go through. "He decides that it is better to wait until he gets permission to enter." (Kafka) Instead of doing something about the doorkeeper not letting him in, he just sits there, patiently waiting to be let in. "There he sits for days and years." (Kafka) He waited until it was time for him to die of old age, and he still never got to go in the room, because the doorkeeper closed the gate.
Basically, the man waited his whole life for nothing. So, what Kafka is trying to say here, is that you should not waste your life waiting for something to happen. It is a tragic mistake that can easily be prevented. All that has to be done is to make the necessary changes to accomplish what you want to.