Being "Authentically" Positive

They say that you should smile or read a positive affirmation when you feel depressed. But what if you just don't feel that smile or affirmation? If it's not authentic, start changing your perspectives about the problem or situation.  Let go of the burden from the past and the "what if's" about the future. None of that exists. Live in the moment. Take one step at a time.  What you can't handle just give it out to the universe or to God with faith. Feel gratitude for all that IS right now....