For example see the nifty chart. 26th may, the random trader sold nifty @ 9540 because he thought price is going to fall. Exit the trade @ 9580 with loss. Random trading is worse than impulsive trading. It swipes away the capital in few days. Check yourselves whether you do random trades. If so, change that habit at once before it wipes you and your trading account completely. Above example is just one trade.
Note : This is a real incident. I dont want any trader to do such mistake and shared it here.