Comedian Evan Williams lost his brother to CF (Cystic Fibrosis) and his mother to complications from Lyme disease a year later.

The roller coaster of grief that life puts you on, coupled with Evan's own struggles with sobriety make for some serious insights into why we do what we do.

Evan is about as open and vulnerable as any of my guests have been, and I can't thank him for coming on and discussing his life as frankly as he does.

For more info on Evan, check out his website http://evanwilliamscomedy.com/

Follow him on twitter @ItsEvanWilliams