Take some of the change from your car and drop it on the ground in the parking lot. It's like giving away good luck. Whoever finds it will feel really lucky for the rest of the day.
You've heard that you aren't supposed to judge others, but did you know that you also must not judge yourself? Accept yourself for who you are now.
Our actions have a ripple effect like a rock splashing into a pond. Remember that when you interact with other people. You have an effect on them that spreads to the next person, then the next, and so on. If you help one person have a good day, you have helped countless others as well.