Mathematically with this size chip stack yes, you should still be pushing or folding. To adjust to the different situations you need to put your opponents on ranges of what you think they will call you with and then adjust your pushing range so it is profitable against their calling range [SNGPT is the best tool to help you with this]. If you have a big stack, but not the biggest, you should be more tentative about playing against the one stack that can take you out, and the same goes for micro stacks that will be more likely to call. Again, to account for that you just adjust their ranges and play accordingly.