sir i buy a course from online.which is 3000 per Month.for IIT jee.but due to my laziness and procrastination and watch dirty vedios.i can not control my mind.so i waste my time and no preparaing for iit jee.online watch mobile in place of study online

First of all please specify your question. I think in your case there is presence of lack of motivation. Try to motivate your self and set small goals in a day and try to achieve it. If you think that tomorrow is my date of examination then you will study more seriously. Demotivation arises for everyone when they prepare for any competitive exam. If you want free materials for iit jee install telegram app and there are many channels there. They you will get free materials. Also in youtube there are very good channels which are trying to prepare students for iit jee. Try to follow them and most importantly make your own notes. I think this would help you.