Russell Glass, the easygoing and quietly self-assured boss of Headspace, the mental health support company, does not appear to be a worrier. But he once suffered from crippling impostor syndrome. It was 2014 and he had started a job as a senior executive at LinkedIn, just as his third daughter was born. The combination of additional responsibilities in an unfamiliar corporate environment and very little sleep proved to be corrosive.
“I found that I didn’t trust my gut instinct. I went from a 200-person company to a 5,000-person company. I saw the way they were doing things and I just felt, how could that possibly be the way you do things. But this is LinkedIn, a hugely successful company so [I thought] it must be
