Yes Nirmal, i have not said to hurt you.
Only selling in high buying in low is not a better method.
If u want to know the system then I will tell u a simple and effective trading system.
First Check the script MACD buy signal calls ( U can use MStock or Amibroker) then check that volume indicator. If both conditions are satisfied
then u go for a buy or sell.
I m using this simple system for 2 yrs and its very effective.
Go with the trend.
Try with option if ur have guts. Mostly i go with NIfty options.
Still u have any doubts. ask I surely reply U.
All the best!