I've been running a solo business and got obsessive about finding prompts that actually save time vs. ones that just sound good in a tweet. After testing 200+, here are the 5 I'd keep if I could only keep 5: 1. The Ruthless Editor "Rewrite this to be 40% shorter without losing any meaning. Cut filler, redundancy, and hedging. Show me only the final version." The specific percentage matters — vague instructions return vague output. 2. The Devil's Advocate "You are a ...