Ok, maybe not whast you are looking for but my Mom has had this hanging in her kitchen for about 40 years now.
"Mr Business went to church, he never missed a Sunday,
but Mr Business went to Hell for what he did on Monday"
I love this because it pretty much sums up a lot of the hypocritical "Christians" out there.
A serious one that I like is this,
“The secret of health for both mind and body is not to mourn for the past, worry about the future, or anticipate troubles, but to live in the present moment wisely and earnestly.” (Buddha)