To evade arrogance, remind yourself (from time to time) that your talent or success could have been better. To be thankful, remind yourself (every now and then) that your illness or failure could have been worse.

We ought to be thankful not only for what we have but also for what we do not have.

Usually, that which could have been better could have been worse.

Some people are happy that they have each lost one instead of both legs, whereas some are unhappy because they have each lost a toenail.

Gratitude tends to attract the things for which we are grateful in advance.

You cannot, at the very same time, be grateful and unhappy, or ungrateful and happy.

The happiest people are not those who have the most, but those who are the most grateful for what they have.

Suffering and happiness are not mutually exclusive.

Unhappiness is a contagious disease caused by a chronic deficiency of gratitude.