You have gone through a lot in a very short period of time. I am so sorry to hear about your loses. Therapy will probably be the most effective way for you deal with the things that are going on in your life at the moment. You are going through a lot, and it would be very helpful if you could talk to someone about them.
If Celexa has worked for you in the past, there is a good chance it will work for you again. Don't worry too much about becoming addicted to the xanax or klonopin. You are using it responsibility, and you are on the smallest dose possible. Concerns with over addiction / dependence usually arise when you take larger doses for an extended period of time. You can always taper off the xanax or klonopin slowly to avoid any withdrawal effects - but these are less likely to occur at your dose. Medications will give you some relief so that you can work on the underlying problems - this is where therapy comes in.
Best of luck...
There's a difference between the stress people get when bad things happen and the constant anxiety problems people with anxiety disease have that comes all the time for no reason. I'm not sure strong medication is the thing for you, since your problem seems episodic, connected to relationship problems. Everyone suffers when that happens, and only time can heal it, so I just don't think strong medication, the magic pill, is the best thing. They do have problems of their own. I think therapy would be a better first choice than turning to drugs every time this happens since you seem to function fine in between.
Just curious could my lack of appetite be from the Celexa? I didn't have much of one to begin with because of stress, but now it is non existent.