Control the controllable. You are in charge of your own actions and reactions. Make them genuine to yourself and learn to be patient and kind even in the most trying of situations.
Words hurt, smiles don't. Do not allow yourself to sucuum to yelling or treating someone unfairly because of your own challenges inside of yourself. You never know what that person is going through and it is always humbling to take a walk in someone else's shoes.
Stay positive. In a world full of negativity, it is always refreshing to see the sunshine coming out of someone who takes an optimistic approach to life. Be that sunshine and let it shine on the darkest of days.