When do you sell your stock?

[>take]

A stock, you bought at Rs 100. Climbed to Rs 200 and then plunge back to may be Rs 80 in no time.
What is the right time to sell the stock?

Buy Blue-chip shares > Make realistic targets and time line for each share and as and when it will achieve, sell it or review it.

And how do you get that right time?

Realistic target > sell it or review it at that time.