Decide To Be Happy
Resolve from now to see your glass of life as half full rather than half empty. Happy people give thanks for the many blessings in life rather than worrying or complaining about the things they do not have.
Assume the best of intentions on the part of everyone around you. Most people are pretty decent, honest and are trying to do the very best they know how to. When you look for something good in their words and actions, you will almost always find something.
Finally, resolve to be cheerful, no matter what happens.
Looking on the bright side is most important when things go wrong