When God heals you of something the devil will try to make you think you've still "got it." When God sets you free from something the devil will try to make you think you're not free and throw those feelings back at you. The devil is a liar! Seriously, he will try to throw symptoms back on you to make you start doubting what God has done. But those symptoms, thoughts or feelings are all a lie. It isn't truth. For one thing, the devil can't "do" anything to you. He can only make you believe what he is telling you is true. When you believe it, it'll come to pass. Whether it be good or bad.
Right now in my psychology class I am reading about the "Learning" process in psychology. Ivan Pavlov discovered in the 1920's that a certain stimuli causes a reaction. When something is done to you and you react a certain way, then when that something happens again you will automatically react that way because you learned to adapt to that situation or whatever it is. For example, many people may not know that I have suffered from anxiety issues for years. Especially when it comes to the doctor. When I was younger, I was at the doctor and I passed out. They said it was from a blood sugar problem, then another doctor mentioned it was anxiety. So after I was told that I had a sugar problem I constantly watched what I ate, felt I had to eat 30 snacks a day, and I would start feeling like I was going to pass out every time I felt like I was hungry. Then when I was told it was anxiety I would be in certain situations where I would get nervous etc. and I would feel that I was going to have an anxiety attack and pass out. So because I passed out, I associated that fear with every doctor visit. I had trained my mind to think that way and my body to react that way.
How that factors in to a spiritual principal I will tell you. It's about how we train ourselves to think and what we allow ourselves to believe. It's really simple. Believe the Word. If God says you are healed, then you are healed. So believe it. Don't believe and rely on the symptoms that are telling you otherwise. The devil is a liar and don't forget that. Also remember, like I said before, he can't do anything to you and he can't force you to do something. He can only lie and make you believe it. Simple as that.
So there is a little simple truth for you today :)