Charny's questions are unanswered.
But if you want his answer to the problems of the life of arms, consider this from Charny's Book of Chivalry:
[T]hose who have the will to achieve great worth [who] because of their great desire to reach and attain that high honor … do not care what suffering they have to endure, but turn everything into great enjoyment. Indeed, it is a fine thing to perform great deeds, for those who rise to great achievement cannot rightly grow tired or sated with it; so the more they achieve, the less they feel they have achieved; this stems from the delight they take in striving constantly to reach greater heights. And great good comes from performing these deeds, for the more one does, the less one is proud of oneself, and it always seems that there is so much left to do.