Depending on your morality and life style, It can mean everything to you, Friendship is developing bonds that will transcend a lifetime or crash and burn, it can mean everything to a person who has been through a lonely life, living a lonely life is a very painful hell.... an example can be an orphaned child who has never known a parents' love, or a lonely person who's never talked to anyone and is hated by everyone and finally manages to befriend someone, soon that bond becomes important. Friendship is a beautiful thing :)
Loyalty, is a person's will and determination to stay true to a certain goal, person, organization or whatever is important to you. It can symbolize how much your willing to stay true to something and obey. An example can be a simple relationship and being committed to it.
Doing the right thing, ahhh, this one is a little tricky, this leads into one's mind and morality, life style, and knowing the difference between right and wrong, basically your personality and how you tend to see things as right or wrong. Doing the right thing for you can be wrong for another person. Depending on how you were raised, environment, genes and bio stuff factors into the way you think thus affecting the way perceive truth and reality. This has many, and countless examples, i think you could think of a few.
All these concepts affect the way we are, it can make up who you are and will be later on
FRIENDSHIP=HAPPINESS
LOYALTY=DISCIPLINE, COMMITMENT
DOING THE RIGHT THING=WHO YOU ARE, HOW YOU REACT TO REAL LIFE SITUATIONS