In this YouTube video, the speaker discusses the concept of being stubborn when it comes to trading in the stock market. The speaker questions why traders often refuse to cut their losses, even when it is clear that they are wrong. They suggest that this stubbornness may be due to bias from research or taking on too much risk with a particular stock. The speaker emphasizes that ultimately, it is the trader’s fault if they incur losses in the market. While unexpected events or news can play a role in losses, the speaker believes that stubbornness is often a significant factor in causing major losses. The video highlights the importance of being willing to accept when a trade is not working out and the importance of being able to cut losses to prevent further financial damage.