After receiving congratulations from his friends, Kayden returned to his mansion, where he stocked up on food and water, deciding to remain there until the next dueling championship. His focus at the moment was learning the concept of hopelessness.
It was a mid-level concept and, oddly enough, there was a lot of supporting material about it, mainly due to humanity's great moments of despair. Kayden just had to buy some books online.
The learning method was different for everyone, but at its core, you had to feel like no hope was left. A level so deep that he didn't even want to breathe anymore so that he could end his life.
Kayden had a powerful mindset, and this would be completely impossible. So what he was doing was forcing emotions into his mind. It wasn't very difficult, especially with him using some drugs to increase the expression of his emotions.