Purging is letting go of buried emotions.
It's not hard to do. When you start crying for no reason:
1. Think of why you're crying and what the emotion is behind it.
2. Acknowledge the situation.
3. Forgive yourself.
4. Forgive the other party.
5. Let it go.
I recommend listening to Light Language to bring up these emotions. You need to find someone that you resonate with. If you find the language harsh and hard to listen too, then move on to another healer. Light Language speaks directly to the heart. You will not understand it, but that's the idea.