Not that we are sufficient of ourselves to think of anything as being from ourselves, but our sufficiency is from God.
(2 Corinthians 3:5)

Pride or an uplifted heart is one of the greatest enemies of God’s power and blessings in our lives.  When you feel you can live victoriously or function in your own power, strength or intellect then you are doomed to fail.  The Lord Jesus Christ imparted the Spirit of God into every believer.  The only way to live and operate through His power is for you to be Led, humbled and submit yourself to Him.

I have strength for all things in Christ Who empowers me [I am ready for anything and equal to anything through Him Who infuses inner strength into me; I am self-sufficient in Christ’s sufficiency].
(Philippians 4:13, Amplified Bible)

The Lord Jesus Christ wants you to have such a close relationship with Him that you are in constant reliance and fellowship with Him.  He is our strength, hope and reason to live.

You are of God, little children, and have overcome them, because He who is in you is greater than he who is in the world.
(1 John 4:4)
Dwell in Me, and I will dwell in you. [Live in Me, and I will live in you.] Just as no branch can bear fruit of itself without abiding in (being vitally united to) the vine, neither can you bear fruit unless you abide in Me.  I am the Vine; you are the branches. Whoever lives in Me and I in him bears much (abundant) fruit. However, apart from Me [cut off from vital union with Me] you can do nothing.
(John 15:4-5)
I have been crucified with Christ [in Him I have shared His crucifixion]; it is no longer I who live, but Christ (the Messiah) lives in me; and the life I now live in the body I live by faith in (by adherence to and reliance on and complete trust in) the Son of God, Who loved me and gave Himself up for me.
(Galatians 2:20, Amplified Bible)
And He said to me, “My grace is sufficient for you, for My strength is made perfect in weakness.” Therefore most gladly I will rather boast in my infirmities, that the power of Christ may rest upon me.  Therefore I take pleasure in infirmities, in reproaches, in needs, in persecutions, in distresses, for Christ’s sake. For when I am weak, then I am strong.
(2 Corinthians 12:9-10)