Dont set targets that I have to earn this much and that much. Exploit each and every opportunity. Because there is no thumb rule that for this amount you have to earn this much. From rs 50000 some time it is difficlult to earn rs 500-1000. From the same rs 50000 many time you get opportunity to earn rs 10000 in day. So all depends on your skill, market condition, volatility, luck. Dont go for complete theoretical approach if you are real trader then you understand what I mean.
Trading is like what written in Bhagvat Gita- karm karo fal ki icha mat karo. Means take trade as per ur decisions not profit . Let the market bhagwan to decide how much profit to be booked in that trade. Exit accordingly.