A Sound Mind
Your thoughts don’t control you, so you must learn how to control them. Self-discipline and self-control are abilities that have to be cultivated and practiced over time.
Overcoming Mental Warfare
Think about the moments in your life when you are feeling anxious, hopeless, angry, offended, or hurt. Who do you think is talking to you in these moments? While the feelings may be valid at times, the arguments are not. My point is that these moments are opportune times for the enemy to steal something from you by planting thoughts in your mind or by tugging at thoughts he previously planted.