Very often we forget what we have and we just concentrate on things we don't have. We also fail to realise what we want is not necessarily what we need.
We think we need the latest gadgets, luxury goods etc to feel happy but do we really need this or can you live without them if you had to?
The poster puts things into perspective. Most of us in the western world have all the necessities which are food, clothes and a home but instead we still feel poor. Just because we focus on the things we think we should have rather than what we have and really need to have to live.
Remember happiness comes within, you can be a millionaire and be seriously unhappy and suicidal. Money it self does not bring happiness. It is your response to someone and something which makes you happy. Nobody and nothing can make you feel happy but you.