A dog can achieve happiness by just getting a belly rub or having their favorite human walk in the door. Have you ever walked into a board room and seen anyone have such a level of unadulterated bliss come over their face?
A dog knows good people from bad people within milliseconds and walks away from the bad people. Humans on the other hand often work closely with bad people and never see the knife coming that ultimately ends up in their back.
A dog is just happy to be in the car with you and never barks orders from the back seat, they are just happy to be along for the ride!
Today try to view life like a dog and see how much happier you might be; smile at everything that makes you happy, walk away from bad people and just go a long for the ride and enjoy it!
a dog tales 
Well said and good advice to follow.
Wonderful doggie wisdom!