What separates successful investors from the rest ?"No one will deliberately buy a stock that they believe will go down in price and be worth less than what they paid for it. However,
buying stocks that drop in value is inherent to investing. The objective, therefore, is not to avoid losses but to minimize losses. Realizing a capital loss before it gets out of hand separates successful investors from the rest." https://www.investopedia.com/articles/stocks/08/capital-losses.asp