I've been feeling rather restless today, and as such I've been playing quite poorly.  I think it amounts to frustration.  I lost games today to ratings  I usually wouldn't, and when winning, Live Chess would crash, further frustrating me.  Does anyone else have these off days?  Perhaps,  I should take the day off?

I'm having a hard time, not playing much chess or I might blunder in my current condition. Something is hurting my eyes, back ache, sore legs, and a bad left shoulder.

There have been many nights for me that have not gone well chesswise.

Everyone has off days. Don't worry about it. Just keep working and you'll be back on track. If it gets too frustrating, take a couple of days off, and then start back up refreshed.