The right meds do help. How much lamictal are you taking? Are you also taking an antidepressant? I take both lamictal and an antidepressant and even when I get depressed it is mild to moderate, not severe any more.

Think carefully about going for disability, especially if you have a good income and a job you usually like. The amount of money you get from disability is most definitely less than you get on most jobs. I know going on disability also affected my self-concept as I felt like a failure and sometimes still do. I hate it when I meet people for the first time... their first question is usually "what do you do?". At first I said I retired but felt bad because I wasn't telling the truth. Now I start talking about the place I volunteer.