"Look on the bright side" is an oft quoted saying. Oh and just in case you haven't noticed, there is always a bright side! Positive thinking is so much happier and affirming than negative thinking.
While it is true that everything in life is not perfect, there are still always things for which we should rejoice and be glad. No matter how many bad things come up, I still want to look at the good.
Abraham Lincoln said something truly marvelous about this very subject. “We can complain because rose bushes have thorns, or rejoice because thorn bushes have roses.” What a great way of looking at things!
As you go through life, look at the wonderful positive things that come your way. Let other people sling their mud or be a gloomy Gus. No need for you to fall into that trap. Be happy. Think positive. I do!