Technically not a "failure" lesson, but the most universal thing I've learned so far: there is a LOT of startup advice out there, some of it contradictory, whi

Technically not a "failure" lesson, but the most universal thing I've learned so far: there is a LOT of startup advice out there, some of it contradictory, which makes sense when you read it... but you don't TRULY understand until you experience it. Which in some cases might be too late :p