Sigils For Dummies, a little confused Options

I'm not sure it I am in the right place but, I have been studying traditional witchcraft for about a year and a half now. Its working out fine but I thought--is this really the path I should be on? So I am looking around now and came across, Intro to High Magic, Frater AD.
I have been reading on simple word sigils and I'm ok with making it and charging it. Its the forgetting part that's a problem. Do I need to forget the sigil itself or the reason I made it in the first place. If the later that's too bad since I can't forget something I think about constantly. Maybe I just don't get it, can someone explain?

I don't think its the room; its me. I want to lose the extra weight I put on this winter so I can't really get away from the thing since I am the thing, but yes--I like the rubber band idea very much. I just flicked a fingernail across my cheek--ouch! I am probably very used to chanting and visualizing over and over for a long period of time, but this is a different process. Thanks, this is a huge help.