how to never lose your keys again . . .

I usually put mine in the same place as soon as I come into the house. I have a mail and key rack. If my hands are full and they don't make it to the rack, they will be on the table in the way, so I will eventually put them on the rack.

I am a forgetful person. I knew it from the start and I have a weird suggestion. If I were you, I would have my key duplicated or even triplicated, keep one in a very secure place that's were you always keep important stuff. The duplicate, in your wallet/purse or pocket (if it's too small, you can also put it in one of your shoes, just step on it, and give the triplicate to your loved one from whom you can borrow it if you lost both what you have. I know it's funny, my friend. But you know, it might work. I do that.

I have never lost my keys, thank god. I hardly ever go anywhere anymore to have to take my keys with me. I sure hope to never lose them because that would drive me nuts trying to find them again.

I don't think there is any way possible. If you are one of those people that loses their keys then you need to have a few spares here and there. The same goes for people who are consistently locking themselves out of their cars and homes. I have my car key and house key on a ribbon. When I get out of my car, I slip it on my wrist and there it stays until I either return to my car or go home.