To appreciate has two meanings: one is to say “thank you” for something and two is to grow.
If we appreciate the good in our nature, in our inclinations, if we appreciate that part of our nature, it will appreciate and we will have more of it.
The optimal way spreading happiness is to work on your own happiness, because then you are leading by example.
People mostly do what you do, but not what you say.
If you want to spread happiness, be the change you want to see in the world. By example.
Self Wonder 