Hitting a brick wall

After two years of playing poker on a daily basis (and I mean at home
every night, online most days, and at the casinos every other month or
so), I finally had one of those sessions you hopefully have only heard
about.

We were playing a 0.25/0.50 NL home game. Actually started out real nice,
when I cracked aces with T4s (flopped a pair and a flush draw and was all
in on the flop, caught the flush on the river). This was probably really
bad karma for me. However, I put him on the high pocket pair, and I knew I
was even money, so it was a good gamble for me.

First bad beat, I caught a flush on the turn against pocket 9's. Board was
Ts 5s Tc 7s. I had KsJs. Pushed the person all-in. They for some reason
couldn't lay down their 99 in the face of knowing they were beat (and
honestly, I was happy about that). River came another T to catch their 4
outer for a boat.

Later, it was folded to me in the small-blind. I raised the bb with 99. He
called. Flop came out Tc 9s 7c. I bet out, and he raised, I pushed all-in.
I really didn't care if he had the straight, since I could draw out.
However, it was horrible when I saw him flip over TT for the overset. This
was the first time in my poker career I ever hit against an over-set
(except in Omaha, of course, where it's quite frequent, and generally it's
easier to get away from a low set).  After the turn and river, it was
done.

Now, I was on my third buy-in. I wasn't happy, but I expect at times for
this to happen. If I get to a third buy-in on a session, eventually my
correct plays will start paying off.

Later, I called a middle position raise from the big blind with 66.
Flopped my second set for the night on a Q67 board. I checked it, knowing
that the guy that raised plays his hands real agressive. I few raises
later, we were all-in. I flipped over my set, he flipped over QQ, for the
top set. Again, I was up against it.

Now I found an article that discusses the probability of set-over-set,
http://www.math.sfu.ca/~alspach/mag86/.

To get right to the numbers, the chances of only two people in a 10 handed
game getting dealt distinct pocket pairs and flopping sets is about 1 in
1035. Now, that's 10 handed, and we were only 6 handed, so the numbers
are probably a lot higher in my case. So this greater than 1 in a thousand
case occured twice to me in one night. Considering we were probably
getting maybe 25 hands per hour, and played for 7.5 hours, for a total of
about 175-200 hands, the odds were really screwing me over. I haven't done
the math, but I would put a number on this occurence at about 1 in a
million (me being in both the set-over-set hands in 175 hands, and being
on the losing end of it both times).

Usually when I take a loss, I can blame myself. I can point back to my
mistakes. This time, however, I can't see where I did anything wrong. I
was a victim of the cards. So I don't hold any malice toward the players I
was against, nor am I bitching about bad-luck. That's just the way things
happen. I chalk it up as a losing session, and move on. I guess I can
expect more sessions like this in the future, but for the long-run, I
think I can stay profitable.