Hi Tony,

That's it, isn't it? The stress can be more damaging and debilitating than the underlying issue(s). Personally, I've never found anxiety, stress or worry to accomplish anything, so I try very hard to dismiss them however and whenever possible.

Life is rife with uncertainties, what-ifs, etc. In general, it's a control issue; we are more concerned with those matters we can control or effect than those we cannot. I just googled: uncertainties what-ifs and found a whole lot better information, advice and techniques than I could ever come up with, and I'm sure there are better/more search terms/criteria to yield exactly what will help you. Things like:
stress management
dealing with anxiety
dealing with uncertainty

While brain lateralization can be a slippery slope, I do try to control my thinking processes with logic, rationality, and objectivity rather than emotion, though I don't ignore the emotions (gut feelings) - rather I try to put all in proper perspective for each situation.

What keeps me positive is actively looking for the positive and then pursuing it. When (not if) I find myself "wallowing", I first distract myself from whatever negativity I'm dwelling on. This is often self-indulgent, but as I said, I've never found the negativity to accomplish anything, so I do what I need to do. Once I break the negativity cycle, I can better focus on the positive. If I can't help myself (at the moment) I try to help someone else. Here are some of the techniques I use:
http://tinyurl.com/2c642oa

Hang in there. Learn something. Do something.

Best wishes,

Doc