Lyric discussion by jopkins_the_monkey 

Cover art for Life lyrics by Brides of Destruction

^^^ what he/she said, for the most part.

The song is basically saying life can get really hard, but killing yourself or wasting your life feeling sorry for yourself is foolish because life is all you get. If you waste your life, you've wasted your entire existence. Make the best of the life you're given and try to enjoy it.