“As you therefore have received Christ Jesus the Lord, so walk in Him, rooted and built up in Him and established in the faith, as you have been taught, abounding in it with thanksgiving.”
If I said to you, “Walk in this building,” where are you to walk? In this building. The parameters of this building are to contain your walk. This building would be the boundaries, the circumference, of your walk. Now, in this passage, you’re told to walk in the Spirit.
Now the natural person says, “I don’t like that. I don’t want to be hemmed in. Are you telling me that’s all I can do, just walk in the Spirit? I want more.” You are to walk in the Lord Jesus Christ. What I’m trying to say is, nothing outside of Jesus is worth having. You say, “Well, what about my car?” No, you can have a house, you can have a car, you can have your clothes, and you can have all these things, but all these things are a subset of knowing the Lord Jesus. That is, if Jesus allows you to have them, they’re gifts He gives to you. But if you must go outside of Jesus to get any of these things, if you must transgress the law of God to have something else, then you don’t need it. He will supply everything you need, “according to His riches in glory by Christ Jesus” (Philippians 4:19). Jesus is the circumference of your walk.
Spend some time in prayer asking God to help you walk in His Spirit.