I know many people who have the misguided notion that Christians, especially Christian leaders, live above the rest of us. I can assure you that Ministers, Pastors and Christian leaders are all just people. In fact, we all make mistakes and are prone to sin, fail and otherwise blow it. Plain and simple.
God doesn't use people because they have reached some invisible level of goodness. He doesn't call people to ministry or service because they have earned His favor or respect. God is not keeping track of your mistakes, He will use you in spite of your mistakes.
But we have this treasure in jars of clay to show that this all-surpassing power is from God and not from us. 2 Corinthians 4:7
Here's how it works - God is the excellent treasure and you and I are the Earthen vessels. We are like Red Solo Cups full of the life giving power of almighty God. A Red Solo Cup is not fancy, not strong, not expensive but it gets the job done. After all, it's really not about the cup it's about what's in the cup.
You and I may not seem like much on the outside. We have weaknesses and we will make mistakes but God uses imperfect people to do His perfect work. Even with all of our faults and failures we carry the power of God's Holy Spirit inside of us, to be poured out over the world as He sees fit.
So don't be critical of Christian leaders who make mistakes, and don't count out someone who has failed (including yourself), God doesn't.