1)Whenever there is a long gap for my studies or exams,I tend to procrastinate & study only at the last moment,I feel there is time we can do it later & now it has spread to other work also.How to solve this?

With Your studies we talked in the first letter. You have to be not lazy but to accept difficulties. And study well for Krishna's pleasure. Krishna does not love lazy people. We are human and we have intelligence and our endeavor only pleases Krishna.

Even if it is difficult we have to do. As like father goes early in the morning to his job and comes back very late evenings working to hard just to please his children and wife just to provide them with food and cloths. In this way nothing is easy in this world.