Lyric discussion by MissInformed 

Cover art for Do What You Do lyrics by Cute Is What We Aim For

It sounds like Shaant is saying that you cant please everybody, so literally; do what you do, because you can only ever make yourself happy in this life.

"You can work, You can play, From the cradle to the grave, Doesn't matter what they say"

Also, Don't listen to what others have to say, because it really doesn't matter. :)