I have, often. And it is really discouraging.
But do you know why this happens? Because there is a spiritual war going on. Every time you begin to accept your authority in Christ and begin to definitively side with that of Go, Satan attacks you with extra forces.
This can get really discouraging because you begin to believe that nothing good can possibly come out of this situation. On the contrary, it often means that extraordinary things are happening in your life and the lives of those around you. However, we tend to focus on all of the things going wrong - the enemy's work - instead of all the things going right and the lives that are positively changing - God's work.
The devil wants us to get discouraged and live in apathy. When we believe are not affecting anyone we become unaffective. And then the enemy succeeds in his ploy.
With great opposition comes great opportunity. When you feel thwarted in your quest to do good in the name of the Lord, just keep working in faith and keep praying for strength and endurance to over come the trials before you. The best part is that we already stand in victory beside Jesus Christ. The war has already been won; however, we are still fighting the battles.
Stay faithful and keep your heart open to what the Lord is doing around you. You will be amazed by the things big and small happening in your life and the lives of those around you.