To advance God's kingdom with your life, don't forget... you're in a battle.
It's been that way since the fall of Adam... when God put strife between the seed of the woman and the seed of the serpent (Gen.3:15).
This is why every endeavor encounters thorns and thistles.
It's why spiritual gains only come with a lot of prayer, faith and obedience.
And it's also why we -- as the Apostle Paul exhorts us -- must take up the full armor of God (Ehp.6:10ff).
If we forget these things, we too easily give up when facing resistance... when life gets hard.
But in remembering them you're in position to "fight the good fight of the faith" on the patch of earth God has called you (1 Tim.6:12).