The only thing stopping you from appreciating your life and the gift that it truly is, is your stained glass of perception. You have spent entirely too long looking through dark midnight colored glasses. As a direct result of mental "channeling", your mind follows the same neural pathways habitually. It happens to us all to some degree, but meloncholia is a special beast. It will take you a fair degree of mental activation energy to jump out of the trench and carve new neural pathways that see the beauty and purpose in experience. You can choose anything to start with; a flower, blade of grass, a leaf, a tree, a forest, an animal or insect, the sky. You create the meaning. It's an artistic expression of your own design. Or if you prefer the melancholia, than make that beautiful and meaningful. It's just a harder place to start. Good luck. You are an extension of the Creator's Process. Use it!