here are 4 startup truths you need to hear today: 1 - your "unique idea" has been built 3 times already someone's building it right now. someone failed at it last year. someone will launch it next month. stop waiting for perfect uniqueness. start executing better than everyone else. 2 - choosing the right market is a cheatcode low revenue can be fixed. a miserable life can't be fixed. pick markets where being yourself is an advantage. 3 - you're optimising the wrong metrics wrong:…