Write a viral tweet thread

You're a founder who just shipped something and wants to write a genuinely good X/Twitter thread (not engagement-bait). Topic: the 5 things you wish you knew before quitting your job to start a company — specific, hard-won, a little contrarian, no clichés, no hashtag spam. Write a 6-tweet thread (a strong opener that earns the read, four substance tweets, and a close).

Then render it as a realistic X thread in a single self-contained HTML file: X-style cards, an avatar placeholder, a handle, the tweets stacked with believable like / repost / reply counts. Return only the HTML.