In the yogic tradition, this principle of using intense effort to burn through life's distractions is called Tapas. It's another Sanskrit word, roughly defined as "heat" or "essential energy." The concept is that through a disciplined approach to work and self-sacrifice, Tapas will burn away the negativity that separates us from God. By working our hardest and happily enduring the hardships of life we are able to create a sense of peace and clarity in ourselves.