"Always Look on the Bright Side of Life," a tongue-in-cheek comedy song written by Monty Python member Eric Idle, first featured in the 1979 Python film Life of Brian and was a Top 10 hit in the Australian Music charts. It is a theme song for optimists.

An optimist is a person who engages in positive thinking and looks on the bright side of life. An optimist is inclined to be hopeful and to expect good outcomes.

Faith is described as the substance or assurance of things we hope for but have not yet received.

In Silver Linings, Terry Lees explores the strong connection between optimism and faith. Terry concludes that by maintaining an optimistic outlook, rooted in unwavering faith and a conviction of our own abilities, we unlock the potential for achievement.