If you are feeling stressed or depressed for any kind of circumstances in your life, following are the things you can do that will instantly cheer up you up and make you happy, according to science. Listen to music from the happiest time in your life, to which a beautiful memory is associated. Think about your goals, it releases happy chemicals in your noggin and changes the way you look at the world. Get proper sleep. Beat procrastination by doing simple things first. Smile and wear glasses.