There's a whole world of difference between paper trading and actually putting your own money down.
I recently sold a bunch of financial stocks which had done well, including the company I work for in particular, now I'm hanging onto a few others and just sitting on the sidelines mainly, watching. Typically I wouldn't throw less than $5K at an individual stock, or more than $10K... not much point getting killer returns on a $1000 investment.
I tend to buy stocks which have reasonable dividend payments, so if I get the overall direction wrong, there's still some cash coming in which gives me time to play a longer game, so to speak, so while it'd be nice if everything I picked went up, it never actually works that way, but I don't freak out when reasonable backtracking occurs, if at heart it's a good company.