Are meltdowns healthy?

Every now and then we all have a "meltdown". Some of us cry, others yell, some resort to violence, and me-well I guess I just shut down (after having myself a good cry of course). The good news is that I usually have a moment of clarity after I shut down. I sit and think about what caused my meltdown and what I could have done to avoid it or at least lessen the blow. I often find that maybe I overreacted or read into a situation more than I should have. Either way, there comes a time when we all have to take a step back and admit we were wrong. Yesterday, I had a meltdown. I didn't include anyone in on this little escapade, but I still felt awful afterward. I realized that a friendship is only as strong as the people involved in it. My BFF may have made a new friend, but that doesn't mean that they care less for our friendship. My insecurity came because I wasn't feeling all that great about myself. So I guess meltdowns are healthy (passive meltdowns, of course).