Walter Mitty, a man who daydreams
Daydreams define Walter Mitty as a victim, a man who lacks self-esteem and confidence.
Walter Mitty gets bossed around by others in his real life. People like his wife and others that he knows tell him what to do. "Remember to get those overshoes while I'm having my hair done."
Secondly, Walter lacks any self-esteem that he has and is always doing what he is told. A parking lot attendant tells Walter that he can not put the chain on right, so he tells Mitty to get out of the way so he can do it correctly.
The final claim is that, Walter is daydreaming to escape the pressures of the real world because he feels sad in the real world and happy in his daydream. His wife nags him, the parking lot attendant tells Mitty he cannot do something right.
Daydreams, they help Walter escape from being a victim that he is defined as in his life.