The flip side of this is that if you are down by a little bit, you should not allow your opponent to slowly and confidently increase his advantage (unless you think he'll make little mistakes and lose the advantage; that would probably mean you're better than him, and we're probably not talking about that situation). Instead, you should force a big risky fight in which your opponent has a substantial chance of losing, if that's possible.

Along similar lines, chess grandmaster John Nunn wrote, in Secrets of Practical Chess, that when you are down, you have two basic strategies: "grim defense" and "create confusion". If you are, say, a pawn down, it may still be possible to draw if you make no mistakes; your opponent will have to work hard to force a win, and he may even get impatient and try to win quickly with a risky strategy; this is "grim defense". If that strategy is unappealing (if his advantage is simple to consolidate and exploit, or if you don't feel like slow and careful defense), then you may opt to do risky things to create complicated, high-stakes positions and hope your opponent makes a mistake; this is "create confusion".