On the day former Illinois Gov. Rod Blagojevich begins a 14-year prison sentence on a corruption conviction, he's getting some advice on life behind bars from someone who knows firsthand how hard it can be: Jack Abramoff.

Abramoff, a former Republican lobbyist, was the central figure in a corruption scandal that ultimately led to charges against numerous lobbyists and public officials. He served four years of a six-year sentence in federal prison.

In a poignant interview on CNN's "Starting Point," Abramoff offered a strategy to Blagojevich for surviving his incarceration. Watch the video to hear Abramoff's advice and reflections on his big regret the day he surrendered to authorities.