It really depends... To a newer trader buying as the market is testing lows and shorting as it's testing highs with a divergence is scary as hell. Once you get used to it it's not so bad... Entering a little later as things start to confirm has lower odds in your favor but feels much safer. Chase a move and your likely @#$*ed... Hehe...
I think emotion and fear are huge factors of why traders who trade stocks, futures, options etc find themselves with no success. Paper trading definitely gives traders who are new to the game a false interpretation of how they would react in real market type settings. Especially when they are pulling the trigger themselves and using there own money. Traders must manage their trades as well as the emotions they may experience during their trading days. It's something, I think if not all, many traders struggle to do.