emotional roller coaster

I feel like I have tears inside of me that are about to come out very soon. Like I need to have a good cry. If you've had this feeling then you know what I mean. That on-the-brink-of-tears feeling where even the silliest things make you feel like you're going to spontaneously combust into tears? It almost happened last night.. at work. Thank goodness I held it in. I was just feeling a roller coaster of emotions yesterday. Happiness, anger, sadness, frustration. And then I dropped like 8 cases of water on the floor (by accident) and almost cried because of that. This means it's coming any day now. I think I'm just so unsatisfied with my life and feeling so down about the place my mind is at right now and it's starting to creep to the surface. I just need to get it out of my system