BOSTON ( WBZ NewsRadio ) — Darryl "D.M.C." McDaniels knows what it is like to reach the mountaintop.

McDaniels is best known as a member of the legendary hip hop group Run-D.M.C., alongside Joseph "Run" Simmons and the late Jason "Jam Master Jay" Mizell. Together, the three crafted such hit songs as "My Adidas," "King of Rock," "It's Tricky," "Christmas in Hollis," "Mary, Mary," and their cover of Aerosmith's "Walk This Way," a collaboration with Steven Tyler and Joe Perry that helped bridge the gap between hip hop and rock music.

Run-D.M.C. also became the first hip hop group to go platinum, grace the cover of Rolling Stone magazine, and be nominated for a Grammy Award, among other achievements.

And yet, McDaniels also knows that success does not equal happiness. Speaking with

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