Advisors: Fred Ehrsam Co-founder of Coinbase. Previously FX trader at Goldman Sachs. Olaf Carlson-Wee Founder of Polychain Capital. First hire at Coinbase. Angel investor. Joey Krug Co-CIO at Pantera Capital.

According to a new study, for some people, being told to 'think positive' is very hard on them and may even be doing them more harm.