Not to use an I voice, rather make it definite. <span><em>Example of what not to do...</em> </span>"I believe that India has is too overpopulated because of [...] and actions need to be taken swiftly." <span><em>Example of what to do instead...</em> </span>"India is overpopulated due to [...] and actions need to be taken swiftly."
You can start by first choosing your topic, find the information on the topic, state your thesis, make a tentative outline, write your first draft, and revise your outline and draft