I have always been able to see angels and demons. I don't recall every being really fearful when I was younger but when I became a Christian the demons started tormenting me more. Now before anyone asks what they look like, I am going to tell you that I have never seen a demon in their true form, only as shapeless figures. Angels are the same. They have never shown me their true form, but a shapeless figure followed by immense peace. Whereas the demon was the opposite, immense fear.
They first started tormenting me by suddenly appearing, then disappearing in a second, enough to get the fright of my life. Then one night, when I was about seventeen years old, I woke up to see this dark figure in front of my bed. At first I thought it could be my eyes playing tricks on me so I closed them and opened them a few times. Alas, the darn thing was still there. My heart was beating up a storm and I could feel the evil. Then suddenly it disappeared. I jumped out of my bed and ran to switch the light on. I didn't sleep for the rest of the night. I prayed and read my bible. I slept with the light on for quite some time after that, too.
What was really bad was that they started tormenting me at school. They would come out the walls while I was walking from class to class or when I went to the bathroom. It was bad. It got so bad I refused to go to school. I had to go for counseling. Thankfully the counseling helped me to believe in the name of Jesus the demons must flee.
Over the years they would come and go. I will never forget at the age of nineteen when I was at Bible college. A fellow student and myself were sitting in the car waiting for the school to open. The sun had already set as it was winter and we had been sitting in the dark for a while just chatting about the normal day to day things, when suddenly I saw this dark figure appear and walk in front of the car then suddenly disappear. I was so shocked. What shocked me even more was my friend asked me if I just saw that. It was the first time a demon has ever revealed themselves to someone else as well as me. I knew then that it wasn't my eyes playing tricks on me.
About the same time my mom and I had moved into a new flat. While I was unpacking in my room I heard singing. I went out my room thinking it came from the lounge but it was dead silence. I went back into my room and it started again. I even put my ear to the wall to hear if it came from next door but nothing.
That night I saw him: the demon sitting on top of my cupboard. He would appear at all sorts of funny times even during the day. One night I even caught him looking back at me in the mirror - you don't want to know that feeling. I prayed and rebuked him but he stayed for years. A friend of mine told me I am keeping him there and finally this year I got rid of the demon. I got rid of a certain sin in my life and it was that sin that kept him there.
In the eight years since that first attack they have tried to attack me more. They have jumped on my bed and shaken my bed but they don't reveal themselves anymore. It has died down in more recent months as I no longer get annoyed by them, and even the fear has dissipated some. The spirit of fear manifests itself only if I am stupid enough to watch scary movies and stuff, the usual triggers. I always wondered why God allowed me to see them. I must add that it has been years since I last saw an angel.
I cannot speak as to the reason for your high amount of spiritual exposure. I can say that it does push you to have a close relationship with God and in the end your continued relationship with God is all that really counts.
Normally with such a high amount of demonic presence there will be demonisation (not the same a possession). However if there is none then I think you can for a good portion of this conversation rule out personal sin. Because demons are not know for holding their punches. So if they could physically harm you they would. So know that you are protected if so only physically. A second purpose for all of these visual displays is to mess with your head. As long as you are focused on trying to stay sane or not look for demons behind every bush. Then you cannot do other things like contribute to the community or often not even be in community.
Keeping your home safe. You need to dedicate your house to God, pray at all the corners of your property stating that you are giving it over to god. Some people break bread when doing so. Remember it is the symbolism of handing it over to God that counts not the ceremony. The second thing is that you should anoint all your doors and windows with olive oil once again dedicating the building or apartment to God.
If that has all been done and you are still getting visitations then you need to look in your house. Old family objects things that you did not buy or things that have any spiritual significance must be removed. This can be things ranging from rings to pictures to even a mixed tape.
If all of these have been done, and you still have visitations in your house then they are linked to you and you are in some way being demonized, for information on this look at the work of Derek Prince, he explains it very well.
On the broader topic of these issues I urge you also to look at the works of Rebekah brown. Its pretty harsh to see that world but it adds a lot of persepctive.
Take my advice on, as one that has had issues with these things as well, be careful not to fall out of community and not to fall into depression.
Good Luck.