This loss of emotional control is stress related. The best therapy I can think of is to have an outlet for that stress. Physical activity is one of my favorite ways. For decades I was in weightlifting, football, track and field, not realizing I was "self medicating" by exerting myself physically. All that pent-up stress has to be released. Some put that energy into their work and some into physical activity. Convert that negative energy into something positive.
I haven't found crying, yelling, screaming, cursing, etc. to be of much usefulness, but if that's what it comes down to, then do it. Just have the common courtesy to do it on your own time and not in front of others. Otherwise, you might be accused of "attention seeking behavior" by people who are frankly, sick and tired of it, think it is a form of manipulative behavior, and/or are simply unempathetic of it. So, best just to avoid other people in this case.