Can a Person with not so fancy certificates or achievements in school get into Harvard ??

Hey i am Bikram, right now i am in my high school but i don't have any fancy certificates or achievements yet (except one or two). What should i do in my college(Bachelors) or is it even possible for a person with a decent background but a good record in college (doing bachelors) get into harvard (for masters) and what should i do to reach upto that level ?
IMPORTANT:- I can only go with a scholarship as i am not very much rich and can't afford the fee of harvard, so technically my chances declines there too.

I don't have a very big question. This is my simple question and i respect everybody who can reply to my query