[Nairb]

With a $100 roll you are not even close to those limits. You really should be playing 5nl with that roll. What you experienced in the hand above is called variance and you really have to be rolled properly to maki it through the inherent ups and downs.

My advice is:
1) Play within your roll (20-30 buy ins at the level you play)
2) Read the forums religiously, it is where I learned most of what I now know.
3) Invest in Pokertracker so you can go back over sessions and see what mistakes you made, and helps you make a more informed decision about when to get your money in.
4) When you feel tilted, like when someone makes a boat in a hand he should have never been in, TAKE A BREAK.

The most important thing IMO to not go busto is to practice proper bankroll management. I maintain around 1000 online and I am rolled for nl25, marginally rolled for nl50 but I live at nl25. It is my comfort zone and where I have achieved the best winrate. I am not going to make 1000 in one session but I will not lose my roll either.