A nice person is a 'yes' person, whereas a good person is a person who accepts their responsibility in things and moves forward and tries to constantly evolve and isn't afraid to say no or challenge someone or be honest or truthful.
Look at the word responsibility-"response-ability"-the ability to choose your response. Highly proactive people recognize that responsibility. They do not blame circumstances, conditions, or conditioning for their behavior. Their behavior is a product of their own conscious choice, based on values, rather than a product of their conditions, based on feeling.
We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. But there are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.
Each one of us matters, has a role to play, and makes a difference. Each one of us must take responsibility for our own lives, and above all, show respect and love for living things around us, especially each other.
I don't do celebrity endorsements. My work with Conservation International is a good use of whatever celebrity I might have to draw attention to important problems. I have the same responsibility as everyone to reduce consumption and to teach children to respect the environment.
Responsibility I believe accrues through privilege. People like you and me have an unbelievable amount of privilege and therefore we have a huge amount of responsibility. We live in free societies where we are not afraid of the police; we have extraordinary wealth available to us by global standards. If you have those things, then you have the kind of responsibility that a person does not have if he or she is slaving seventy hours a week to put food on the table; a responsibility at the very least to inform yourself about power. Beyond that, it is a question of whether you believe in moral certainties or not.