You must have some vision for your life. Even if you don't know the plan, you have to have a direction in which you choose to go... You want to be in the driver's seat of your own life because if you are not, life will drive you.
The prosecution wants to make sure the process by which the evidence was obtained is not truthfully presented, because, as often as not, that process will raise questions.
I remember a time when I would hear a band and then want to hear everything that sounded like it; I wanted it to feel like I was tapping into a thing, even if it wasn't.