“I say then: Walk in the Spirit, and you shall not fulfill the lust of the flesh.” Galatians 5:16
When you say “Lord Jesus” from your spirit, at that point you are walking in the Spirit and not carrying out the lust of the flesh. The flesh has many facets to it. It can be angry one minute, lustful the next, and then turn into a deep depression with morbid introspection. Although we may have these feelings of the flesh, we can interrupt them by walking in the Spirit and not carrying them out.
In my early Christian life, I did not know how to interrupt the flesh and walk in the Spirit. I just did not know how to apply Christ at the times I needed Him the most. For example, I used to have problems knowing what to do with my mind. Certain thoughts were so forceful that they would plague and torment me. The only thing I knew to do to handle those thoughts was to drive down the freeway for miles. I would just drive my car, hoping to shake the thoughts out of my head. I did not realize at the time that the secret to handling those thoughts was to exercise myself in the realm of the Spirit, that is, to walk in the Spirit. To call upon the Lord in the midst of the thoughts is the way to walk in the Spirit and not fulfill them. The name of Jesus is the name that interrupts the flesh to let Christ be our relationship with our thoughts.