Jim, I know it must seem like you are causing those things, but there are probably plenty of reasons for these events to occur. It is not uncommon for us to feel like we have more influence than we actually do. Some people think that what shirt they wear will influence which sport team wins. Also, there is the very common thing that people do when they think they are doing paranormal things, which is called "ignoring the misses". You gave a very clear example of this when you told the story of finding your wallet.
If you had found your wallet on the fourth try, you would have assumed you had "made yourself believe", would you not? Surely you wouldn't have said "Well, I found it by luck, because I wasn't really believing hard enough." And if you had missed it on the fifth try, you would assumed once again that you hadn't "believed hard enough", right?
Why do you think that people always find something in the last place they look? Obviously, because, after they find it, they stop looking. You would have continued to say you hadn't believed hard enough until you found your wallet, then, as soon as you found it, you would have stopped saying that. Maybe it was better than random chance for you to find it on only 5 tries. I didn't see the field and I don't know the circumstances. But remember that subconscious things could also help you. You might have subconsciously realized that you recognized a part of the pasture you had been across before. That would significantly increase your chances. Also, even though your path may be narrow, your field of vision is quite wide. Each trip covered more ground than you thought, and you certainly didn't do it with your eyes closed.
About the bugs, I don't know, could be something chemical, or could simply be your perception. I sometimes go camping with a guy who never uses insect repellant. He says he doesn't like the smell and he doesn't need it because "bugs don't bite him". One time I looked at him and there were mosquitoes biting him. I pointed it out to him and he said, "Oh yeah, they land, but they don't bite." He was simply ignoring them because he had decided that "bugs don't bite him", and he truly believed it.
All I am saying is that there are many explantions for what has happened to you without invoking some "power" over which you have limited control. The only way to tell for sure is to test it. I know you don't want to be tested by others, but you can try testing yourself. For example, keep a logbook of things that you think are going to happen, like which table the teacher is going to dismiss first and your foot position at the time (try it with different positions). Write it down before the teacher comes in so you won't get visual hints. That will give you some idea if you are actually influencing the events, or if you are only remembering the "hits" and ignoring the "misses".
It would be wonderful to have powers to influence things like this. I've wanted them. We all have. Sometimes we can want them so badly we make ourselves believe we do actually have them. There's only one way to find out if it is true that we have those powers, and that is to test. Otherwise, we will never know if we are just fooling ourselves. If you don't really want to know, then don't test. It is your decision. I wish you well whatever you decide.
ETA:
I wrote this before I saw your last post, so maybe the "field of vision" thing was not correct. The "subconscious hints" could still be true though.
