We are also taught in 2 Corinthians 10:5 to cast “down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ.” This means that we have to take control of our thoughts, and when we find ourselves weak in emotion or spirit, we then turn to Him for help and power to control our minds. But all of our thoughts, every single one of them, should be taken into captivity to the law of Christ as we submit every single one over a life-time and as we gradually turn over every single area of our lives to Him bit by bit in our daily prayer and Scriptural meditation times, and sometimes during our sacrificial acts of service to others.
Moreover, we are responsible for what we feed into our minds. Romans 12:2 tells us, “And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.” The television programs we watch, the video games we play, the Youtube videos we watch, the music we listen to, etc., all these things have an influence on our thinking and subsequently on our emotions and emotional/mental health. If we watch dark, sinister things, we risk the effect on our minds and emotions toward darkness, sin, and evil. If our minds are strong, watching such things on occasion will probably not do much harm, but regular, consistent time watching such things always runs the risk of putting us into darker thoughts and moods as bit by bit, we are dragged down into the darkness of the worst thoughts of our human mind and heart.
That said, I do not believe that absolutely everything that we watch or listen to must have some kind of overt spiritual value, but it must have some kind of redeeming, uplifting value, leading us to positive thoughts and to higher action. It is positive and good things that we must put into our minds on a consistent basis and which we must dwell on in order to have a healthy heart, mind, and spirit. In Philippians 4:8, we are taught, “whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy—meditate on these things.”
Additionally, both of the two passages from Romans and Philippians not only require that we put good things into our mind and that we think on good things, but also they require that we spend time with God in prayer and with meditation on Him, His Ways, and His Word to put the highest, most transcendent thoughts into our mind and also to put His Spiritual power into our hearts and minds that will counter all the negative thoughts of the world and of the Devil that constantly try to invade our minds.
I pray that God will teach you how to maintain a positive attitude, how to give up control of all negative thoughts to Him, and that you will find time to spend with Him and His Word daily in order to renew your mind and to receive the power to do all these things.