A memoir would be just such an example.
He struggles with learning fluency of a language, and he feels that not being able to understand French fully is holding him back. He wondered if there is something wrong with him that lead to his lack of understanding French.
The character studies French more as a way to attempt to catch up with those who are fluent, even when all he feels is hopelessness. He even started to notice that he is improving with the language and he is able to control his emotional health more as a result
The character learned that struggles and lows are normal in life but eventually lead to highs and feelings of accomplishment.
Answer:
Beowulf had gone to help King Hrothgar of the Danes to defeat a monster called Grendel who had tormented the kingdom for a long time. He defeated the monster with his bare hands after he discovered his weapons had no effect on him.
Shortly after defeating Grendel the monster, his mother comes for revenge and Beowulf goes after her and also defeats her, but it was an epic battle. After helping the Danes, he was rewarded with a lot of gifts and he went back home to Geats as a hero and was subsequently made their King.
Fifty years later, Beowulf is called to action again and defeats a dragon who mortally wounds him, he dies, is cremated, and a statue is erected for him by the sea.
Beowulf might have failed in his role as King by fighting the dragon because, with his death, his kingdom was defenceless against attacks and possible invasion.