It is good to realize failure when it shows up.
It is good to confess failure and receive the cleansing of the blood of Jesus.
It is even better to ask God to expose failure that is based on you being too alone and too individualistic, separated from another sister or brother in Jesus Christ.
By companionship in Christ I do not mean two Christians getting together to talk about movies, cars, politics and having no regard for the Lord Jesus. I do not mean finding some like-minded Christian with whom you can be in your natural life with.
No, I mean seeking a partner with whom you reserve some time for the pursuit of things of God. We are coming together for this specific time CENTERED upon Christ. At least we are CENTERED on Christ first
before we attend to other mutual interests.
Fellowship is not Christian one added to Christian two.
Fellowship is meeting in the Person of Christ - in the name of Christ - meeting focused on Christ. The time may be limited - ie. one half hour. But it is focused on Christ together.
Because this so pleases God's heart because it consider's HIS need and HIS kingdom, all other things will be added to you as well.
I am not saying God will not bless at all our individual pursuit of Christ. I am saying you will save years of beating up on yourself because you are not so victorious as you think the Book says you should be, if you learn that you are a member of something bigger called "the Body of Christ".
Meeting even with one or two others with a consciousness of this Body of Christ, each will obtain greater victory.
This is something of apprehending with all saints the dimensions of Christ.
" ... that you, being rooted and grounded in love, May be full of strength to apprehend with all the saints what the breadth and length and height and depth are and to know the knowledge surpassing love of Christ, that you may be filled unto all the fullness of God." ( Ephesians 3:18b-19)
You move just a bit closer to that entity which is the Christian destiny - to be corporately filled unto all the fullness of God. This we can remind God of. This we can place before Him and remind Him to honor that we come apprehending with other saints His riches - that we may be filled up with the life of God.