The Happiest Baby on the Block by Harvey Karp

The Happiest Baby on the Block by Harvey Karp introduces the "5 S's" method—swaddling, side/stomach position, shushing, swinging, and sucking—calming 90% of crying newborns in under 90 seconds. The core insight: babies have a "fourth trimester" needing womb-like conditions. Clinical trials show this reduces infant crying by 50% compared to standard soothing. Though simpler than #3's complex strategies, its effectiveness in acute situations makes it indispensable for sleepless nights.