Keep this idea ready: when you lose something external, think about what you gain instead. If what you gain is worth more, never say you've suffered a loss. Don't say you've lost out if you get a horse instead of a donkey, or an ox instead of a sheep. Don't say you've lost out if you do a good deed instead of making money, or if you choose calm silence instead of pointless chatter, or if you choose modesty instead of crude talk. Remember this principle and you'll always keep your character where it should be.
Keep this thought in readiness, when you lose anything external, what you acquire in place of it; and if it be worth more, never say, I have had a loss; neither if you have got a horse in place of an ass, or an ox in place of a sheep, nor a good action in place of a bit of money, nor in place of idle talk such tranquillity as befits a man, nor in place of lewd talk if you have acquired modesty. If you remember this, you will always maintain your character such as it ought to be.