Retail investor who manages his own retirement portfolio. Made my first trade the morning after Black Monday 1987. On the eve of Black Monday T. Boone Pickens, while on Night Line mentioned, "It was a good time to enter". So I did.
Often there is no lesson to be learned, each stock is unique.
Stocks go up and down, it is what they do. Run with the bulls, short when it gets nuts.
Tired of most technicals, volume and news is all I care about.