I have noticed that I gain a lot of new symptoms as I increase my dose of Lamictal, all are more on the hypomania side of things. Irritation, anxiety, spontaneous crying and anger... for me it started to level out after about two weeks on a stable dose. I'm still increasing though.

Doing something I love helps with the agitation sometimes. It's better if it's something that involves moving around. For me, sewing is good because I have to lay things out in another room to pin then come back in to sew. Sitting in one place for a long time sometimes makes it worse.

Also exercise/yoga helped a lot. On nights where I couldn't sleep because my skin was crawling from all the excess energy, I got up and exercised vigorously for a while. I felt instantly better.