Control is an illusion, a lie formed by those who wish to make you feel important, thereby allowing them to manipulate you via your want of importance. Truth be told, only you are of any real importance to you, and in rare occurrences those extremely close to you, but even they have their wants to be filled don't they?
So the question is: Are you really important to them for who you are? Or merely for what they receive from/through you?
I'll give you a hint as to the answer: you'll never know for sure.