Oh Julia, I know exactly what you mean.
It's kinda like, before HRT, I only ever felt one thing, and not all that intensely. Now with HRT, WOW!. I can feel happy and sad at the same time, calm and aggravated!. And all emotions are far more intense! As my therapist said to me, "welcome to being a woman".
In terms of dealing with it, I'm not doing all that great either. The lows are low... It's taking a huge amount of effort to hold myself together on the bad days. I hope someone wise can help us out.