The absolute smartest person you know is full of shit about something. So let go of gurus; instead, look for good & relevant advice.
Things that annoy me: the phrase "notoriously private." Setting boundaries isn't a bad thing to do. Should be "famously private."
Good marketing isn't just the jar, it's also the peanut butter.
I think April 1 should be from this point forth Critical Thinking Day. Practice in asking yourself, "Is this bullshit?" before you send!