Stock trading is like any other business which requires time and effort from the traders. One should have the knowledge of trading to develop a strategy and be disciplined to follow it every time. All the business takes time to succeed and will have both profits and losses. Likewise, trading will also have both profits and losses and it is inevitable. It is the risk vs reward which differentiates one trader from the other. hence it should always be favorable for you and not against you. Always have a trade plan before even entering the trade and do not let your emotions to change the decisions later on.