Sue,
It is a bit hard to answer your question, because what one person may find stressful, another person might not. From your prior posts and our discussions, it seems to me that you find certain specific aspects of being a patent agent stressful, e.g., the billable hour, the deadlines, the extreme need for attention to detail, etc. If that is the case, then the honest truth is that being a patent agent/attorney may not the best career for you. Why? Because the elements I just mentioned are, for the most part, universally present in some way shape or form in EVERY patent agent/attorney position.
My suggestion is that you take a very long look at why you WANT to be a patent agent/attorney. A lot of prospective attorneys I talk to are interested in the field for two reasons, namely the money, and to get out of a laboratory setting. My personal opinion is that those two reasons alone are not sufficient in most cases to justify the investment of time and money that is required to become a patent attorney/agent. You need to genuinely enjoy some aspect of the job (or at least think that you will), else the stress that comes with it will be very difficult to deal with.
Personally, I find satsifaction in my job for a number of reasons that don't include money or working in an office environment. For example, I enjoy the fact that I learn something new, every single day I am at work. I also enjoy the challenge that comes along with managing a massive docket of applications and meeting deadlines for a client. I don't view them as being stressful (though they can be), but rather as a "time trial" in a drag race (i.e., how quickly can I move cases safely across the finish line). Not to say that I don't get stressed out about certain aspects of my job. I definitely do. E.g., I absolutely hate it when my job encroaches on my personal life, which it has a tendency to do if I am not careful.
All that said, I think that if you are honest with yourself, you will realize that for any given job, there will be things you like, things you don't like, and things you find stressful (but which you do not necessarily dislike). The question is whether what you like or need from the job is worth dealing with what you don't like, and/or what you find stressful. If you can objectively answer "yes" to that question with respect to any particular career, than that career is probably worth pursuing. But from your prior posts and our discussions, I think you need to be brutally honest with yourself before you decide to move forward with pursuing a career as a patent agent/attorney (or not). Just remember one thing. You DO NOT HAVE to be a patent agent/attorney, and there is NOTHING wrong with choosing to do something else.