...that no matter how much we care, some people just don't care back.
...that no matter how good a person is, they're going to hurt us every once in a while, and we must forgive them for that.
...that money is a lousy way of keeping score.
...that talking can ease emotional pains.
...that it takes years to build up trust, and only seconds to destroy it.
...that true friendship continues to grow, even over the longest distance.
...that we can do something in an instant that will give us a heartache for life.
...that it's not what we have in our life, but who we have in our life.
...that good friends are family members that we are allowed to choose.
...that we don't have to change friends if we understand that friends change.
...that the people we care most about in life are taken from us too soon.
...that we should always leave loved ones with loving words. It may be the last time we see them.
...that our background and circumstances may have influenced who we are, but we are responsible for ourselves.
...that we shouldn't compare ourself to the best others can do, but to the best we can do to others.
...that it's not where we are that is important. It's where we are going.
...that no matter how thin we slice it, there are always two sides.
...that it takes a long time to become the person we want to be.
...that it's a lot easier to react than it is to think.
...that we can keep going long after we think we cannot.
...that either we control our attitude, or it controls us.
...that heroes are the people who do what has to be done when it needs to be done, regardless of the consequences.
...that patience takes a lot of practice.
...that there are people who love us dearly, but just don't know how to show it.
...that your best friend and you can do anything or nothing and have the best time.
...that sometimes the people we expect to kick us when we're down will be the ones to help us to get back up.
...that there is more of our parents in us that we thought.
...that sometimes when we're angry we have the right to be angry, but that doesn't give us the right to be cruel.
...that just because someone doesn't love us the way we want him/her to doesn't mean /he doesn't love us with all s/he has.
...that maturity has more to do with what types of experiences we've had and 
what we've learned from them and less to do with how many birthdays we've celebrated.
...that we should never tell a child his/her dreams are unlikely or outlandish. 
Few things are more humiliating, and what a tragedy it would be if s/he believed it.
...that it isn't always enough to be forgiven by someone else. Sometimes we have to learn to forgive ourself.
...that no matter how bad our heart is broken, the world doesn't stop for our grief.