First of all - congratulations.

One night is a pretty small sample size, but the important stuff is the way you describe your play - it seems that you play a lot tighter, and in the type of table you are playing it seems like the correct style. You are on the right track - just keep following it.

You will not end up with a big pile every night, but if you play tight agressive poker you will finish most nights with a positive value - it will be much less then the random maniac with the hot streak of the night, but it will be consistent.

Based on your posts I will give you the following advice:
1. Continue to play tight agressive, very ABC poker, little to no bluffing - just winning with your good hands and avoiding classical 2nd best hand scenarios.
2. Unless the guys you play with are total morons sooner or later (probably after 6-8 weeks) they will figure out that you are beating them with ABC poker and you will see them folding more and more when you are in the hand. At this stage (but not before) - it will be time to shift your game a bit - when you see this happening consistently return to the forum and you will recieve advice for the 'next' stage.

And BTW - out of the hands I am most proud off - most of them are folds - be proud of folds based on good reads.