Seuss or Pooh

Came across this quote
and although the quote itself didn't really pull me in,
it was the way it was said that drew me.
I cannot decide if it's more Dr. Seuss or Winnie the Pooh:

Life is a mirror
and will reflect back to the thinker
what he thinks into it.

I believe it is the "what he thinks into it" that gets me.
Such a simple concept, but so unused by so many.
Think positive into your life.
Think wellness into your life.
Think happy into your life.
Think beautiful into your life.
Think good people into your life.
Think laughter into your life.
Think peace into your life.
Think love into your life.