Decide for yourself whether you want to be healthy, happy, grateful and content or ...
... sick, ungrateful, alone and depressed. Perception is the second step. This creates your consciousness, your thoughts, your feelings, your habits and your whole being. It starts with deciding what you want to perceive. Choose wisely my friend. Your body will show you what you have decided for. While one sees the dark, cold night, another sees the colorful lights of the city or the beauty of the stars and the diversity of life. Find out what you want to perceive in advance.
I want to be happy!
It's only a desition. :) you become happy, if you really want, but you must try.