Every sweet has its sour-Ralph Waldo Emerson

Every sweet has its sour, every evil its good.

Give your best and enjoy your work-Andrew Matthews

You give your best not because you need to impress people. You give your best because that’s the only way to enjoy your work.

The source of your joy-Thich Nhat Hanh

Sometimes your joy is the source of your smile, but sometimes your smile can be the source of your joy.

Make ourself happy-Carlos Castaneda

We either make ourselves happy or miserable. The amount of work is the same.