...learn from other's mistakes...

Before getting angry at a situation, make sure that you have all your facts straight. Situations could be skewered and/or blown way out of proportion. Good intentions can be read as bad intentions. What was once meant to mean, "I hope you're day is good" could become "Go die and fuck yourself" as it passes through a filter we call the grapevine. Make sure you know what's going on, and don't be so quick to take one person's word as gospel without at least some verification. It's not worth the stress or the energy unless it's warranted. Life is too short.