Summary: I say then, Walk in the Spirit, and ye shall not fulfill the lust of the flesh (Galatians 5:16)
There are 2 kinds of lives, the Self-life & the God life. The self-life is when we live to please the flesh, when we live to gain a reputation with human beings, when we seek human approval, when we care so much about what people will say about us, than we do what God will say. The Bible says the flesh is full of pride, selfishness, jealousy, self-worship, (Galatians 5:19-21). Most of the times that people are unhappy is not because they have too many problems but because they are full of themselves. Living for self is the worst way to living, 1 John 2:16 says, For everything in the world--the lust of the flesh, the lust of the eyes, and the pride of life--comes not from the Father but from the world.
The scriptures show that there are two primary objectives that motivate the flesh, pride and selfishness. And the Bible further shows that God is a humble God, there is no selfishness in him. He owns everything, and he is all powerful, yet he does not boast or show off. Satan does not own anything, but the dude is full of it, he is very proud and likes show off. To walk with the Lord means we must die to the flesh and to self, we must be empty of self so that he can fill us with himself. John the Baptist said concerning Christ; He must increase, but I must decrease (John 3:30). In other words, he wanted to die to self and live the God life. I say then, Walk in the Spirit, and ye shall not fulfill the lust of the flesh (Galatians 5:16). To walk in the Spirit means to walk according to God’s Word, and to walk in the flesh means to be led by pride and selfishness (doing what you do to please yourself). Galatians 5:17 says, the flesh desires what is contrary to the Spirit, and the Spirit what is contrary to the flesh. They are in conflict with each other. God’s plan is that we should saturate our minds with his Word so much so until we can walk in harmony with him, share the same desires with him, think what he thinks, feel what he feels, and to do what he does. This is only possible when we have our minds renewed by the Word.