Smile more, and mean it.
Leave tips without expecting a thank you. Know that what you do for people will hit a welcomed spot with the right people. Know you've made a difference no matter what response you've had. Some people are having bad moments, or bad days, or bad lives, and your positive attitude will help, surely in small ways. Don't expect people to validate your positive view. Try to be authentic and learn to appreciate the small little things people do for you.
Turn a negative upside down and find the lesson in it. Every negative has a positive--this is a law of nature-- every wound has a hidden gift.
In time the universe will return the favors you do for others, but others seldom do a direct deed in return. Don't keep track! You'll be pleasantly surprised when something nice is done for you!!
Silently thank people for accepting you for who you are. Don't try to be cool for people. Know that to be human is to be vulnerable, but not stupid. Being cool means you must care more about what others think than what you yourself think. People never treat others better than they treat themselves, so treat yourself with respect and others with notice the difference.
We see what we want to see; look for the positive in others; appreciate the good in everyone, but don't expect everyone to be good all the time. There is a negative side to everyone and people
choose whether to be good or not. Seek the people who choose to be good most of the time--much less trouble for everyone concerned.
Make a habit of NOT lying. Lying starts out as a conscious cover-up or justification, and eventually reappears as a self-destructive force.
Smile a lot, and be authentic. Smell the wildflowers!
"A kindness is most appreciated by the kind"
~~carefulcarpenter