Musician Richie Sambora says he entered rehab last year due to a horrible year that caused him to hit rock bottom. In an interview in Manhattan with People Magazine, the guitarist for Bon Jovi said his divorce and his dad's death all played a part in his downward spiral.

Sambora, 48, reported that his divorce from actress Heather Locklear, a custody battle, alcohol addiction problems and his dad dying of lung cancer all added to the stress that sent him to Utah's Cirque Lodge for a week last September. Sambora also broke up with girlfriend Denise Richards.

Sambora has rebounded however, and is concentrating on taking care of his mom, spending time with his daughter and raising awareness for lung cancer.

On Tuesday night, Bon Jovi kicked off a yearlong concert series for the facility where Sambora's dad was treated. The concert series is for the non-profit Stand Up For A Cure to benefit Memorial Sloan-Kettering Cancer Center in Manhattan.

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