Warren Buffett warned debt can ruin your life — and praised his dad's parenting when he was 'behaving like a jerk'

Warren Buffett built his fortune through long-term investing at his firm, Berkshire Hathaway.

Johannes EISELE / AFP via Getty Images

• Warren Buffett warned about the dangers of debt in his last TV interview as Berkshire Hathaway CEO.
• He also gave advice about parenting, making mistakes, picking a job, and lifelong learning.
• Buffett said his dad was "very forgiving" when he misbehaved, but told him, "You can do better."

Warren Buffett warned about the perils...