Well done. It sounds like you are well and truly on the right track. Finishing a session up after having AA and KK cracked means you are probably playing fairly well, and it certainly sounds like you are starting to know what you are doing. My advice is to keep reading the HH that are posted here (and post your own). Take some playing time out each week to go over the hands you have played and find out what you did right/ wrong so you know what to do next time the same situation comes up. Read all of the stickies in every Holdem forum would be a good idea too but bear in mind that the NL forums will not apply much to your game. Dont judge your play by your results. You seem to be getting the idea of not necessarily being dissapointed when you finish a session down, but that works both ways. Just because you have a winning session does not mean you should be satisfied. You should still go over hands even if you won them, if you think you could have played them better.

Most importantly of all, you should play and think about your game when you are playing and after you have finished. If you are now playing a profitable game then your lessions just became free. The more you play and think about poker the better at it you will get (up to a point).