It is only when a man is renewed in his spirit,in mind, when he walk in true holiness and righteousness can he stop walking in lies,deceit, it is when a man has accepted Christ with all his mind,spirit,soul and body. Can he practice true christianity, it is only when a man nailed the wisdom of this world to the cross and adopt the wisdom of God can he run this race and run it well,
Gal 4: 21 If so be that ye have heard him, and have been taught by him, as the truth is in Jesus: 22 That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts; 23 And be renewed in the spirit of your mind; 24 And that ye put on the new man, which after God is created in righteousness and true holiness.

25 Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another.

It is only when a man is fashioned in the image of God spiritually, when he has fully come to realisation of the existence of his creator can he acknowledge Him with all his heart,spirit soul and body,

How can A man renew his mind, firstly he must recognise that he needs help and he can't help himself, he must realised that his old self needs to be dead, and he must replenish or replace old self with new by constant studying of the world, its just like somebody who doesn't have a mirror who wouldn't know what he looks like daily, you need that mirror to look into which is the word of God, it tells you who you are and who you are suppose to be,

James 1: 21 Wherefore lay apart all filthiness and superfluity of naughtiness, and receive with meekness the engrafted word, which is able to save your souls.
25 But whoso looketh into the perfect law of liberty, and continueth therein, he being not a forgetful hearer, but a doer of the work, this man shall be blessed in his deed

romans 12:1 I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service. 2 And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.

Renewing of mind is a gradual process, your mind can be renewed by giving God more time, by having fellowship with Him,by appreciating and doing His word, because you can't claim to know a product without studying it,so you need to know God more by studying His word to know His mind,

A mans mind naturally is filled with every worldly filtyness,
When you come in contact with Jesus,He is able to cleanse you,

1john1:9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness

renew your mind daily by asking for Gods grace, studying his word daily because you are only limited by what you know, you can only produce what you know, so for you to know,for you to get to the standard/level God wants you to be, you must know more,

No matter how tight your schedule, always make out time to study,praise and pray to God,if you have not been doing these,please repent and be faithful with your relationship with God,
God bless you
pray and study Gods