Just watch babies. They're in a constant state of love. How could they possibly be so joyful? Because they're in harmony with the source. Some call that source God or soul or spirit or consciousness. They have no resistance to being joyful - unlike adults. You didn't come forth into this world to suffer, to be anxious, fearful or depressed. Remember, your thoughts, not your world, cause you stress. And you can change your thoughts.