Social worker Lisa Keefauver was just 40 years old when her husband died from cancer in her arms. She has since become an outspoken grief activist, helping people identify, understand, live with, and talk about their grief through her book and podcast, "Grief Is a Sneaky Bitch." Lisa tells Sarah why scuba diving is a metaphor for life, how to metabolize your grief over a lifetime, and what to do when grief catches you off guard in the most unexpected moments.

You can find more information on Lisa's work at www.lisakeefauver.com