To fight in your consciousness to remember God; to wage war against your animal mind through rectitude (wisdom / conscious ethical discipline) and love (the Divine Mother). Wisdom is the Pillar of Mercy, governed by Chokmah, and Love is the Pillar of Severity, governed by Binah.
To live life intensely is beautifully represented by Gustav Holst in The Planets, especially the Warrior of Mars who must conquer the psychological afflictions, here and now, through moment by moment self-observation and remembrance of the Innermost Being: