Life is predictable; it's simply a mix of opportunity and challenge. Why are some people more friendly and happier than others? Hint, it's not because bad things don't happen to others. The same things happen to about everyone, it's that kind of planet. Here's a short TEDx talk by Allison Ledgerwood that will give us another tool for better living.
Gratitude is the healthiest of all human emotions. The more you express gratitude for what you have, the more likely you will have even more to express gratitude for.