1) Above all, be true to yourself. Know your values, and be guided in all things by your own conscience. If you encounter situations that threaten your personal moral code, act in ways that are consistent with your own principles.
Each of us has a moral compass that guides us. Our compass is set by the values we learned from our parents and grandparents and other significant individuals, by our religious beliefs, by the values of the society-at-large, and by our personal experiences. It is this internal guide that helps us know right from wrong and also helps us navigate difficult problems when we encounter them.