I switched positions. Seriously. I loved what I was doing, but the stress was getting to me. (I actually have BP issues too, but they're not related to my job.) Much happier, even though it's not what I'd prefer to be doing!
Probably not the best advice, but it's what I had to do to keep my head in a good space. (Of course, the only other person I work directly with is 32 weeks pregnant, so it was a bit of a trade-off.) I feel like a huge weight has been lifted off my shoulders!