If you had a read, and some history with villain from the 99 hand, I can get behind it, everything else you played great.

But man, $100? You lost $100 playing 25NL? That's nothing. Really. Imagine playing 4 sng's and getting your aces cracked twice, being coolee'd with KKvAA, and the loosing a flip with QQvsAK. There, you just lost 4 buyins. 4 buyins is really very standard. I can go up down 4 buyins several times a day and not worry too much (if that was happening every single day for a couple of weeks I might start to wonder). My rule of thumb for swings is as follows: Down 1 buyin? Don't even notice. Down 1-5 buyins? Shrug, and move on. Down 5-10 buyins? Crank out Poker Tracker, post hands, spend all day looking for every possible leak you might have. Run pokerev, and then realize that you're just running bad (like 90% of the time that's the answer to why you lost up 10 buyins). Any more than 10 buyins down and there's a fair chance that it's your own fault, but it can still just as easily be variance, and probably is.

This is by no means scientific, obviously. A lot of people say you should only check your account balance once a day or something, to stop yourself thinking this way. I take the point, but you do also need to notice if your pissing money, and playing like a shit head.

But man, 4 buyins is really nothing. If the above is how you play poker, then you're making lots of money long term.

With that said, if you're new to ring, or just loosing confidence, play lower than 25NL, and work up.