You are the system, the society in which you are brought up in. There are things you don't have to comply to survive but there are some in which you have to comply or you will suffer or die.
How can you change the system? Who can change the system? That is what revolutions are for. Does it have to be through revolution? No, it can be through evolution. Who changes the system? People like Hitler but also people like you on a smaller scale. How do we know that the system is right? We don't, we see it after some time and we adjust. So that is why I am a vegetarian. I don't like the system and I adjust. It is a form of a personal rebellion. I eat fish though... why? Evolution as opposed to revolution is time consuming but the good thing is that it is is more stable... You can only evolve if you think and work on your self and if you are not selfish. Do you have to work? No, of course you don't. You have to have strength and health and $ to survive but you don't have to think. Well, at least this is our current system... here in the UK.