I feeling We are driven by one desire or another. It's not a bad thing. But it seems to eat up our resources a lot. Isn't it so?
Indeed... and this is why God said in His Word to keep your mind busy, and think on healthy things, because when we sit idle, that is when the devil works on us and talks to our minds and plants evil desires in our minds and hearts, to act upon. If you entertain desires in your heart, you will bring them to fulfillment, so God said to think on things that are lovely and pure and of God. We should think of positive things and keep our minds busy, so we don't do things we will later regret.
The Bible says the heart is an evil thing and who can know it? If we let it daydream and allow Satan to fill up that space in our thoughts when we are idle, he's going to plant some eveil thoughts that will get us in trouble, every single time. We must be productive and busy, and that is when we are happiest. And when Temptation comes, we are to turn away from it immediately, resist it and immediately think on other things, and get busy. The more we think on things that we desire, the worst it will be for us, and the more probable we will fall into sin. It starts with that evil thought, look, or suggestion and that plants the seed of desire in us. If we allow that desire to grow, we will act on it, eventually.