The most important component of happiness, by far--there isn't a close second---is gratitude. Nothing instills gratitude as much as religion and prayer done correctly. Prayer is a major vehicle to gratitude. Not request prayer, grateful prayer: Thank you, God.
Our role in universe--it's not original to me--is completing God's work by using our free will to be good and holy, to make a better world than we have inherited, to appreciate what we've been given, and to enjoy it. I am absolutely convinced it is a sin to be unhappy. It's a statement to God that he blew it.---DENNIS PRAGER