As mentioned earlier, emoted feelings create our thoughts, which direct the flow of energy within our physical bodies and create our reality. So whether an emotion is positive or negative matters as to what type of life we are creating for ourselves.
The feeling of joy is a high vibration of our being joyful. It comes deep from within our formless dimension, our consciousness. This is one with who we are and is reflected inside out, not outside. Even within the affluent world, neither people nor possessions can create a lasting joyfulness.
Lack of joy is a daunting dis-ease around our world. What poisons the outer is the quantity of non-joy in the inner. We often become dependent on what is happening on the outside to determine our joyfulness. We often focus on what is not in our lives rather than what is, forgetting gratitude = abundance.