Best bull markets
Bull moves of 30% plus are relatively rare. So once market goes up 20 to 25% your antennas should be up. But most people do exactly opposite. They are super duper bullish at that stage. Many become bullish at that level.
Study every bull and bear market in history. Make it part of you. You will gain perspective and not listen to people who say market is about to fall 50% plus.
24 bearish years in last 85 years
Worst year was down 43. 2008 was second worst year in history.
Everyone should maintain this database. It helps you better understand the market moves.