Spending time in prayer with God.
By praying in the Holy Ghost.
Say out loud, just the opposite of that thought that lines up with the word of God.
They are the Sons of God.
Psalm 119:11 - Thy word have I hid in mine heart...
No, we wrestle against principalities, powers, and rules of the darkness of this world, and spiritual wickedness in high places.
Your feet should be shod with the preparation of the Gospel of peace - that means - tell others, that God isn't mad at them any more because Jesus paid the price for their sin.
Find out where you treasure is going - and your heart will be there.
Psalms 127:2 - 2 It is vain for you to rise up early, to sit up late, to eat the bread of sorrows: for so he giveth his beloved sleep.