Sarah Silverman talks about her fight with depression

Robin Williams' tragic death last year was an important reminder — just because an entertainer makes you laugh doesn't mean they're always happy.

Which is why it's important — and brave — that Sarah Silverman discussed her own mental health struggles with Glamour in a new, candid interview.

In her new movie I Smile Back, Silverman plays Laney Brooks, a woman who battles depression. Turns out, that's not miles removed from her truth. "I knew playing Laney Brooks would take me back to a very dark place," she said.

She then described the panic attacks that started when she was as young as 13, and only got worse when she started working in entertainment, leading to a harrowing incident when she was 22 and working for Saturday Night Live.

 But one night, sitting in my apartment watching 90210, something came over me again. Though it had been nine years, I knew the feeling immediately: depression. Panic. I'd thought it was gone forever, but it was back. My friend Mark helped me get through it. He found me a therapist at 2:00 A.M. and informed me that no, I would not be quitting SNL in the morning and moving back to New Hampshire. Instead I got a prescription for Klonopin, which blocks panic attacks. It saved my life, even when I was fired from SNL at the end of the season (as it turned out, I didn't know myself well enough to make a real impression).

Read the whole interview here.