Here’s my list, based on five years in the startup scene:
- Asking other people for an NDA before you tell them about your startup idea. Please, just don’t.[1]
- Posting on Twitter that you’ve got funding secured to take your company private, even though you haven’t[2]

- Date your coworker (unless you’ve already dated before you started your company)
- Faking that you ran away with €35m of proceeds from your ICO, just to create a PR story [3]

- Screwing over co-founders or investors over their shares in the company
- Falsely claiming that you’ve invented a super-special blood test that only needs very small amounts of blood, then raising > $700m by lying to investors.[4]

- Not researching competition before you start
- Refusing to hire people who are smarter than yourselves (or to listen to them after you’ve hired them). To quote my business school’s strategy professor: “A-People hire A-People. B-People hire C-People, because they want to feel like the smartes guys in the room.”
- Explaining your market potential like this: “There are x million people in (insert random market segment). If we only capture 1% of that, we’re GOLDEN!” (Yeah, but how do you capture that 1%?)
- Scam customers and investors by selling an overpriced juicer [5]

- Arguing over job titles (e.g. who’s going to become the CEO). If you can’t agree on responsibilities, maybe you’re not responsible enough to run a company after all.
- Thinking you’re the superstar of your company just because your business card reads “CEO, bitch”. If you run your company like a king who gives commands, you’ll have a hard time keeping your team motivated. Better define your role like the captain of a sports team, who is leading his mates while still fighting on the pitch.
- Losing focus
- Not being 100% committed to your company
- Wasting investor’s money on useless things like company cars or a super-high salary, instead of spending it to advance your business

Footnotes
[1] No-one will steal your f***ing Startup Idea, so stop asking for NDAs
[2] Why Elon Musk Reversed Course on Taking Tesla Private
[3] ‘Over and Out’: $50 Million Savedroid ICO Makes Apparent Exit Scam
[4] Theranos – Wikipedia
[5] Juicero – Wikipedia
Originally appeared on Quora by Andreas Kitzing. Follow him on Quora!