Don't ever get too cozy you don't know which way the wind will blow ya. Sometimes your up sometimes your down. And yeah also like you said not to take today forgaranted and make sure that you say how you feel.
You can't change anyone - you have to accept them the way they are or walk away.
The only person you can depend on is yourself.
Always have a back up plan.
Life is as changeable as the weather and although it brings obstacles and adversary with it, be sure to look for, find and focus on the door, or doors of opportunity that negativity is oftentimes designed to push you towards and help you walk through.