Is Jesus true? Does He mean what He says? Answer decidedly, Yes, every word. Then if you have settled this, by faith claim every promise that He has made, and receive the blessing; for this acceptance by faith gives life to the soul. You may believe that Jesus is true to you, even though you feel yourself to be the weakest and most unworthy of His children. And as you believe, all your dark, brooding doubts are thrown back upon the archdeceiver who originated them. You can be a great blessing if you will take God at His word. By living faith you are to trust Him, even though the impulse is strong within you to speak words of distrust. – {TM 517.3}

2 Peter 1:4 – By which have been given to us exceedingly great and precious promises, that through these you may be partakers of the divine nature, having escaped the corruption that is in the world through lust.

Unbelief and doubt are more than just not believing in the existence of God. It’s not believing that what God says is true. If God says Through His word that He is doing a work in your life, then believe Him. Let go the fundamental belief that it can’t really mean that for you, because, in reality, that’s calling God a liar.

So believe His promises. Trust His word. Grow strong in faith and belief, and you will reap the fruits of the Spirit in your experience.