Among other things, a sermon needs to accompany good example.
"nor as being lords over those entrusted to you, but being examples to the flock." (1 Peter 5:3)
Also, I think of how Peter preached so effectively in the Book of Acts . . . after God had healed that man. So, God proved Himself, then Peter preached along with how God proved Himself . . . how He demonstrated.
So, possibly it is good to preach along with how God has been proving Himself in you, how He has you succeeding in doing what His word says to do.
But include examples of how you have needed correction, so the listeners can feed on your example of honesty and be alerted to things which need correction and which they might not have been noticing about themselves.
A more mature preacher, then, can talk about how he or she is getting correction, so others can see which way they need to trust God to take them, also.
But, yes, make sure we feed on all God desires to do with us, which is not only correction but maturing us in Jesus and how to love.
In the scriptures I notice how God's word often gives a strong confrontation against what is wrong, but with this confrontation is included encouragement of all the good we can have with God in His grace, instead. So, this could be a partial model for preaching > yes, confront what is wrong, but with this present our hope for all which is so good with God, instead. This can help people to see how their selfish stuff is wrong, because of how it has us miss out on all that is so better and which we can have in sharing with God.
For example, if you preach "all have sinned and fall short of the glory of God." (in Romans 3:23) > this confronts how we all have sinned. But with this, we can see, there is the encouragement that God does not want any of us to be short of His own glory. This to me means, then, how our Heavenly Father desires to share His very own glory with every one of us His children. Plus, Jesus prays this, in John 17:22-26.
So, we can have preaching which helps us to be encouraged to deal with our sin problems, but with trusting God to have us more and more with Him, in all He desires to share with us. So, the focus needs to be not only aiming at wrong things, but also attentive to all we can share, instead, with God and one another as family.
