One day in the garden there lived a family of birds. There also lived a jealous old fox. Mr. Fox always spied on the birds when the bird family flew around the forest. Mr. Fox was jealous that the birds could fly. Mr. Fox tried everything he could to fly but nothing worked. Mr. Fox tried for days and nights to fly, but with the same results, he couldn't fly. After a few days passed, mr. Fox gave up trying to fly he thought it was useless trying to fly. He realized that it's better enjoying his own life and walking everywhere instead. Who needs wings! 
Be happy with what you have. 