From my good friend Chris Stadler
In the military, men have always understood the value of morale. To boost morale, a general will let his men know that there is a plan and it's a good one. He will instill the confidence that they can prevail. He will get them focused on the prize: victory.
When morale is high, a general almost can't contain his soldiers. They want to go out and do battle now – not tomorrow.
So if you have an enemy, what would he try to do to you to get you to fear the battle? Simple. He will try to get you to take your eyes off of the prize and place them on the cost of failure. And when you mention God's promises, he'll say “Did God really say that?”
Because in a Christian walk, there is a cost of failure. The enemy knows that. He also knows that, if we're not full of the Word of God, he can convince us that we may have misunderstood God.
But what choice do we have? We can live for our big-screen TVs and a relaxed family life – until the economy takes a nose dive. Or we can live to fight the battle. But if we're going to fight the battle, we have to do it with our eyes both on the prize and on God's promises and the might that He has to fulfill them. And God doesn't fail.
Strength, energy and self-control come from confidence in our Commander and His calling on our lives. Find energy in His Word, because that's where our confidence comes from.