Meditate.

“This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.”   
 Joshua 1:8(KJV)

Meditation is one of the most effective ways you can renew your mind. When you meditate on the word of God, you ponder upon the word of God over and over again in your mind until the truth from the word dominates your mind. When the word dominates your mind, you will then begin to mutter(speak softly) that word to yourself. As you learn to habitually meditate on the word of God with your mouth, it will condition your mind and your actions to be in line with the word of God.

Do not stop meditating until that scripture dominates your mind and influences your actions, such that your actions will be in agreement with the word of God.

Meditation takes time. God spoke to Joshua in Joshua 1:8, “This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.”

So, meditate on the word of God, and also spend quality time hearing faith based messages over and over again.

This will cause you to have new imaginations and if your imagination is right and consistent with the word of God, it will bring your to the realm of possibilities. The Bible says in Genesis 11:6; “… and now nothing will be restrained from them, which they have imagined to do.”

PRAYER
Dear Father, I chose your way because your way is the way of wisdom. Therefore, as I meditate on your word, may your wisdom beautify my life in Jesus Name, Amen.

For further study read: 
Deuteronomy 6:6-9, Deuteronomy 11:19, Deuteronomy 30:14, Psalm 37:31, Psalm 1:1-3.

DOING THE WORD
Search for a scripture that deals with any challenge you have right now, meditate on it; until it fills your heart with peace, becomes your confession and influences your behavior.