Lethargy, bordering on sloth should remain the cornerstone of an investment style.
You can lose leverage, and it's the only way a smart guy can go broke.
If at first you do succeed, quit trying on investing.
Investing is forgoing consumption now in order to have the ability to consume more at a later date.
People do, as long as you have markets, you'll have excesses.
My favorite time frame for holding a stock is forever.