Yes, the how many BBs you have is the determining factor in how your play should change. I don't panic when I'm short. It leads to bad decisions such as pushing your chips in with Ace-rag trying to steal 2 BB when you've got over 20.

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When you start to approach 10BB, around that area then maybe you look to start stealing a bit more, forcing medium stacks to call your 10BB raise. Since there really isn't much to do with 10BB besides moving in, aside from a limp when you know you can see a flop where your implied odds are large.

Like everything else in poker its all in the situation. What kind of table your at, what type of tourny it is..etc.