“I believe. Help my unbelief.” (Mark 9:24) Make room for Jesus to help you overcome your unbelief.
What is unbelief in God? It is trusting in, relying on, or depending on anything instead of God: Self-effort, human plans, politics, independence, church, money, pride, family, intellect, entertainment, a preacher, talent, skill, whatever. Anything that distracts or disrupts your heart-to-heart connection with the living Jesus is unbelief. Keep your faith on Christ alone. (Hebrews 12:2)
If you’re unaware of Jesus living and working in your life, you’re crowding Him out. (Mark 4:18) Make more room for Jesus to live and work in your life (Mark 1:2-3) by consistently denying yourself, taking up your cross, and obeying Him. (Mark 8:34) For many practical ways to do that, google, The Joy of Early Christianity.
The Christianity that matters is the Christianity that’s in your heart and in your actions. The rest is just fluff.

That indeed a struggle we all face…