^Grow an Attitude of Gratitude: Pay Attention and say "Thanks"
  to those who help you. There will always be something to be
  irritated about - always plenty to complain about - but there
  are just as many things - MORE even - to be grateful for. Never
  take someone for granted, or focus solely on the annoying or
  wrong aspects of their personality or behaviors - if you're
  going to take the time to notice bad things, notice the good
  things too and let them know. that is the oil that greases
  smooth human interactions and keeps tempers down.^