Debra Lee (former CEO of BET, founder of Leading Women Defined) talks with CNBC's Julia Boorstin about building diversity on boards and in the C-suite. They cover topics including Debra's experience as the CEO of BET and on boards including Marriott, Revlon and Twitter; the importance and obligation of mentorship in building wealth and succession planning; how boards can hold leadership accountable for diversity; and whether she thinks there will be meaningful change as a result of the MeToo movement and organizations like TIME'S UP.