Found on Cosmos

Real happiness only comes as a side-effect of peace. Most of it is going to come from acceptance, not from changing your external environment. [8]

All the world is seeking happiness, but knows not in what direction to search. Men must learn that happiness crowns the soul’s quest for understanding. Only through the realization of infinite goodness and infinite accomplishment can the peace of the inner Self be assured.

When a lot of people say happiness, they mean joy or bliss, but I’ll take peace. [2]

A happy person isn’t someone who’s happy all the time. It’s someone who effortlessly interprets events in such a way that they don’t lose their innate peace.

Peace is happiness at rest, and happiness is peace in motion. You can convert peace into happiness anytime you want. But peace is what you want most of the time. If you’re a peaceful person, anything you do will be a happy activity.