The hardest part of mid-to-long-term trend trading is ignoring the fluctuations along the way and sticking to a belief. In a bull market, there will be countless bear moments, and in a bear market, there will be countless bull rebounds. If you're always staring at the daily chart, or even the hourly chart, it's hard to step back and see the bigger picture. Plus, it really affects your mindset: one is always wanting to catch every wave, and the other is experiencing huge emotional swings. The vast majority of people can't outperform the trend in the end when trying to trade every wave.