Chinese proverb: If you want to be happy for an hour, take a nap (economictimes.indiatimes.com)

If you want to be happy for an hour, take a nap. If you want to be happy for a day, go fishing. If you want to be happy for a year, inherit a fortune. If you want to be happy for a lifetime, help someone else

If you want to live longer, take a nap but less than 20 min.