To be happy is to fulfill what you want to do and wanted to achieve. Change your life by doing something you've always done that you enjoyed. Do not stay in your position wherever you are and remain lonely with no rooms for improvement that can make you happy. Go after life is pretty tough instead face your fear and overcome them with enthusiasm. Try to do new things to learn how flexible your brain is. You should know the approaches in life to do change your life that will give you happiness.