ratta is not always a good thing. Try to remember the main concept for each topic. Read the topic 3 -4 times so that you can understand it well and then highlight the main points and remember those. And then when the question come regarding that topic - by then you will remember the concept and just expand it with your own thinking.

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Always look at what you have left.Never look at what you have lost

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Success is not measured by what you accomplish but by the opposition you have encountered, and the courage with which you have maintained the struggle against overwhelming odds