changing the future

i remember 1 day i had daja vu and knew what i would do but i did something different. is this reguler?

You might want to go into more depth.

I don't know what you mean, but I'll take a shot. Could it be that you just thought of what you were going to do, but did something else? Or were you doing a repetitive action that you changed? Supposedly deja vu is just a "short circut" in the brain, where your short term memory has to catch up with your long term memory or something like that. So if you were doing a repetitive action it could possibly explain this.