Three questions that reveal everything about why most people underperform:

1. The market is down from all-time highs about 95% of the time. That's just math. Peaks are rare moments, not the baseline.

2. You should check your portfolio maybe quarterly. Maybe.

3. You probably check it daily. Some of you hourly.

See the problem? The mismatch between what the market does and how often you look at it is exactly why you make emotional decisions. You're watching noise and calling it information. Every dip feels like a crisis. Every rally feels like you're missing out.

The best investors I know check their accounts so rarely that they forget their passwords. The worst ones have their brokerage app on their home screen next to Instagram.

Your portfolio doesn't care how often you look at it. But your behavior sure does.