It's great to have patience. But sometimes you need to put a little force into what you do.
Last night was spent replacing the glass/digitizer on an iPhone 3G. One step of the process is to heat the glass to loosen the glue holding the frame. But even after heating the frame, it's not like the glue is no longer tacky. Although I bent the frame a bit while removing the old glass, it doesn't matter because it's hidden behind the glass. In this case, perfection was not necessary. And that's okay sometimes. Sometimes you need to be rough with the situation at hand to get results.