I have a friend who, at the end of 2015, was skeptical about the surge of Bitcoin and kept believing it would drop, continuously buying credit default swaps, only to end up questioning life as it continued to rise.

Trading often goes against human nature; if you think it will rise, it will likely drop, leading to losses. The news is very important, and having sufficient mental fortitude is crucial. It is also important to refine one's temperament. Why did Buffett become the richest? He persisted in holding and had patience.

I believe Bitcoin will definitely become the main theme.