More gospel than rock, this 1987 hit has inspired great change in people's lives and created memories for music lovers across the world.
Brendan McManus was a corporate high flyer with an inexplicable sense that his life needed to change direction. This song was the tipping point that encouraged him to make a huge decision.
Raghav Prasad writes a music blog about the songs he grew up with as a young man in India. This track takes him back to the 'chummery' where he lived in Bombay (now Mumbai) when he was starting out on what became a globe-trotting career. This song reflects both his continued urge to travel but also how he regards his Hindu faith.
Neil Brand is a musician and broadcaster and a regular Soul Music contributor. He explains that the roots of this track are more gospel than rock.
Pauline Henry was the lead singer of The Chimes. Their version of this track, with Pauline's stirring vocals, not only changed her life but was said to be Bono's favourite interpretation of the song.
Rory Coleman is a world-class athlete and life coach who loves nothing more than to run for hundreds of miles across inhospitable terrain. However, in his 20s, his life was out of control. Something had to change and this song provided inspiration.
Gail Mullin, in Kansas City, describes how much her husband loved U2 and especially this track. Shortly before he died he received a personal letter from Bono explaining what motivated him to write this song.
Producer: Karen Gregor for BBC Audio in Bristol
First broadcast on BBC Radio 4 in December 2021.