Don't be afraid.
Everyone, including myself, could use this advice today and every day. Fear hold us back as individuals and as a group, or race, or species, or nationality. Fear changes our motives and actions and can often prevent us from doing what we really want to do.
The reason this piece of advice can apply to anyone at any time is because it's so vague and encompassing. Even the fearless have at least one fear, be it of being alone, of others opinions, change or of their own deep thoughts. America was so afraid of another attack that we were willing to sacrifice the very ideals that we were bombed for. People too often marry the person they're with more because they're afraid of being alone. People lower their own standards because they're afraid they won't live up to their own expectations. They stay in one town because they're afraid of starting over on their own. Or even live in fear of regret.
Living in fear, no matter how common your fear is, is no way to go through life. What is going to happen is going to happen and worrying about change or something you can't affect only gives you an ulcer. Don't be afraid.