There are very few things that are as frustrating as doing a job or attempting to do a job that was never yours to do in the first place. With that in mind. Let me provide both you and I with this very simple reminder:
You can't change the hardened heart. You can't force the truth to be received. You can't cause the advice to be followed. You can't speed up the process of change. You can't control the outcome.
That's not your job.
Your job is to speak the truth in love.
God's job is to transform. God's job is convict. God's job is to reveal. God's job is to enlighten. God's job is to save.
Our job is the natural. God's job is the supernatural.
Don't mix up the two. Nothing good ever comes from it.