Jesse Livermore — American Businessman born on July 26, 1877, died on November 28, 1940

Jesse Lauriston Livermore , also known as the Boy Plunger and the Great Bear of Wall Street, was an American stock trader. He was famed for making and losing several multimillion-dollar fortunes and short selling during the stock market crashes in 1907 and 1929... (wikipedia)

There is only one side of the market and it is not the bull side or the bear side, but the right side.
A loss never bothers me after I take it. I forget it overnight. But being wrong - not taking the loss - that is what does damage to the pocketbook and to the soul.
It isn't as important to buy as cheap as possible as it is to buy at the right time.