"If we live by the Spirit, let us also keep in step with the Spirit."
The Word of God preached to your flock is not from you but from the Spirit making use of you as His vessel. Take courage in that as you seek Him continually--He will supply what you need to shepherd your people as you commune with Him.
"You cannot preach conviction of sin unless you have suffered it. You cannot preach repentance unless you have practiced it. You cannot preach faith unless you have exercised it. True preaching is artesian; it wells up from the great depths of the soul. If Christ has not made a well within us, there will be no outflow from us."