We can't just hope we will think good thoughts. We have to actively seek them. We have to think purposely, not passively. A passive mind is a dangerous thing; passive people want good things to happen to them, but they just wait around to see what will happen. They do nothing to contribute to a positive result in their lives. The devil wants us to be passive because then he can work his plan without any opposition from us. But the Bible tells us to resist the devil, and he will flee. Be an active person who is always working with God toward the result that you desire to see in your life.