"The Hardest Thing" is the third single released by American boy band, 98 Degrees, from their second studio album, 98 Degrees and Rising. "The Hardest Thing" peaked at #5 in the US and also experienced moderate success in Oceania, peaking at #24 on the Australian ARIA Singles Chart, and #5 on the New Zealand RIANZ Singles Chart. This song was also a featured track on the 1999 compilation album "Now That's What I Call Music! 3". The single was certified gold by RIAA for sales of 500,000 units.