Just make sure you focus on what days you win and what times.
When you take your next step again make sure you start on the days you do your best! At least til your in a bit deeper and get 1 or 2 good sessions under your belt.
Though another thing I could suggest is on the times fish are around a lot more try and focus on the next level, at the tougher times or times you mainly just play regs go back down until your comfortable.
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Not sure if theres any theory or concept but I made this up. When you have enough Bankroll and not sure about it, play the level your beating and when you've stacked enough to play max buy-in to next level.. MOVE UP!
take a shot with other players money not urs.
So for instance you start at 4NL... When you make $6 close that table and find the best table for 6 NL... HELL why stop there just keep converting to the next level 10NL when you have $10 ... But make sure if you lose it that you go back to the original level your rolled for.