Responsibility.

Responsibility is a concept that you have to deal with for your whole life. Your life depends on being responsible and irresponsible. If you are not responsible no one will be able to depend on you for anything. If you are responsible throughout your life it can make things a lot easier for yourself. When you are responsible it makes you a better person, that way people will be able to trust you and rely on you.
When you are responsible you can make better judgment on things than others can. Again, people can trust you more often and you can become a better person by doing so. When you are irresponsible it just makes life harder on you. It can cause many consequences, like getting in trouble and not being able to do the things that you like. I can change my irresponsible habits by maybe trying to replace them with other good responsible habits. I can realize the good things that come out of being responsible like making good grades and being able to do what I want without being followed by parents. They trust me enough to let me go out on my own and do whatever. By being responsible they gained my trust and believe that I will make good judgments without them holding my hand. So many good things can come out of being responsible, its just up to the person to decide if thats the route they want to take.