You can make money daytrading, but as most of the posts state, you should really know yourself before entering this realm. Day trading is hit and run skimming at best. For a brokerage firm to allow you to trade as a PDT (pattern day trader) you'll need to maintain at least 25K equity in your account at all times. As astute as day traders may be, they still need to pay attention to market cap, fundamentals, and moving averages of stock. Day trader "guessers" don't last long and their account will be ground into parking meter money. To be successful in day trading, you'll have exhibit some skill in entry points and setting stops. The higher number of shares in a position, the tighter the stops must be set to avoid steep losses. Do you have the risk tolerance to be a day trader? Can you close out a losing trade at the end of the day? In my estimation, day trading is not for $1000 - $2000 trades. For most trades, you'll need considerably more trading leverage to cover your commission. And you can't let emotion enter into your trades. You need to know where your stock generally trades on any given day. You need to know if your stock is a contrarian - does it go down when the market is trading up and vice versa. To be successful daytrading, you really need to know your stocks. That means you've got a short watchlist of 5 -6 stocks that you watch DAILY and pay particular attention each day as to what they are doing, relative to the DOW, NASDAQ or S&P500.
Last, I would NOT recommend jumping into day trading. Learn how to place your trades, setup your sell triggers and stops first. Learn your risk tolerance. Day trading is no place to learn that you are gripping the chair, tearing down the curtains, and falling down a flight of stairs, because you took a loss and rapidly made another trade which resulted in even a worse trade.