It’s true when they say that your attitude is the true determinant in how much a situation will affect you.
You can choose to be sour about a promotion that you didn’t get, or you can rejoice that you don’t have to put your extra waking hours into a job you probably would not have liked. You can feel heart-broken over a love who rejected you or you can feel good knowing that now your heart and mind are open to receive the love that was truly meant for you.
Whatever is the circumstance that threatens to take away your happiness and peace of mind, just dig inside and find the joy. When you find the joy in any situation it increases your level of endurance and helps you fight any obstacles that come your way.