A fictional character who struggles against some problem is likely to be the main character in a memoir (the protagonist).
Memoir comes from the French word mémoire that means memory. This literary technique tells a story about someone's life. It focuses mainly on some particular theme or the protagonist's time of life. It is told in the first person singular, and include flashback or background information. The main character may be facing a turning point in life or an important problem that is common to most people.