What is the main conflict in Hunger by Knut Hamsun?

In Hunger, the protagonist is a writer living in Christiania in the 1800s. Out of work, he struggles to write articles for the local newspapers to make a little money to feed himself. However, he ends up with no money for rent, and resorts to selling off his meager possessions to the pawn broker one at a time until he has nothing left. After experiencing manic highs and bleak depressions, he finally takes a job on a ship sailing away from Norway, to England, and says goodbye to his native land.