As for the “saying,â€ I suggest “My personal best was good enough only for yesterday.â€ Or, “I can only achieve my personal best today— yesterday’s gone.â€As for the breakdown: Competitor (bronze), Contender (silver), Champion (gold). Wouldn’t have 3 levels by adding good, better, best as this is implied already (i.e., gold is better than silver, and silver is better than bronze, and bronze is better than fourth and below; fourth is the cruelest finish in Olympic sports….no medal). Looking forward to reading the next chapters. Happy St. Pat’s Day. Jack