Today at a tourney I sucked. I lost my queen against players I should've easily beaten. I was expected to get 3rd but got 9th instead. I just sucked today! Do people have Bad days ?

Yes.

Yes, and I refer you to my post of a while back, "I suck, therefore I am."  Man, I hate it when that happens.

I have heap of them.

whoa.... I wish that won't happen to me... but sometimes we really have bad days like that..

I must first state that I have never played a Chess tournament in my life.  I have, however, competed against the best in other disciplines.  a bad day can be analysed.  What did you eat/drink/sleep/think in the run up to day.  Were you relaxed and focused.  Prepared and looking forward to the day.  etc. etc.

There has been a lot written about performance preparation.  The upshot is turn your disappointment into some positive thinking and analysis.  In the end I got to the point where I had a standard preparation and method of doing things to the point of obsession.  It worked though............

{re-engage lurk mode}

Every now & then, I have a day where it looks like I forgot how to move the pieces. You just have to stop, take a step back and go back into it when your head clears.

I slep late last night so I guess thats the reason