Last time I was discussing the wealth of information in Ronald D. Siegel's The Mindfulness Solution: Everyday Practices for Everyday Problems. Not only does he provide several helpful techniques on how to deal with difficult emotions, but he also talks about the challenges we all experience, such as dealing with pain, or dealing with people that cause us pain (did a few faces just pop into your mind?).
By looking at our emotions and thoughts about painful things, accepting them as normal given the circumstances, but learning how to avoid acting on them, we are free to examine them. Further examination of these thoughts and emotions shows that they are transitory, that they pulse in and out, and that if we accept them rather than fight them, we can overcome them sooner. These are powerful techniques. I encourage you to take a look at this book.