your opinion is quite right. i want to add that the stop loss depend on the strategy one using. we have to keep in mind that we have make profit from forex. so if we can win in two trade and loss in one trade then on average we have make profit over this three trade. so it tp for two trade is 50 then total win = 100 point, so my sl must be below 100 pips that i got the difference as my net income. so we have to think combined according to my strategy that how much my gain in a week or in a definite point change.