My sister is a dropper. What should she do to stay motivated and dedicated while preparing for IIT-JEE?

If your sister follows the three Ds,I am confident she will succeed. Discipline, determination & dedication.

When you are not able to solve that problem even when you have spent half an hour solving that problem and you are feeling like dropping the subject, remind yourself that all the students who are preparing for JEE are going through the same struggle and give tell to yourself 5 times aloud that "No one is smarter than Me"_x009d_ and then get back to solving the problem. Always keep in mind that failure is a part of the process. All the best!!

You see not only your sister,there are many engineering aspirants who couldn't do as per expectations in first time and they didn't give up but tried do well next time.Keep in mind that failure is the pillar of success.Discipline,determination and dedication will make the way clear to succeed.Self motivation is very important.Advise her to develop confidence ,do hard labour and regular practice ,I am sure she will come out with flying colour.