trading moves the market and it is necessary for the spreading of bitcoin to the masses. greed is the one that leads you to losing money. remember trading is a zero sum game, for every winner there is a loser. So educate your self, accept your loses and don't be greedy. That way you may end up winning this game.
Very well said! I think it is not the trading which sucks but your own personal interest which plays a vital role in any of the task which you perform. If you are not feeling good while doing trading, better is not to get into it. Holding will be the very much appropriate option in that case.