I think stress is just energy going the wrong way, it has to be redirected and then it can become a force for good.
But the thing with stress is, there are degrees of it - at one end of the spectrum it's mild and easily handled, at the other end it can undermine your daily enjoyment of life.
As a drama teacher I see stress in the middle of this spectrum when young students are faced with a performance for the first time. I give stressed out individuals a specific list of things to try if I see them struggling and this list usually works for them. It's a list of relaxing/physical/mental things to do before they go out and act in front of an audience.
I guess the hardest stress is the long term type which is connected to ongoing situations in life which you can't control so well. There are ways round these involving exercise, ritual and distraction!! The last resort is help from colleagues, friends and family and professionals.
If you're under duress I'd seek help from someone who is experienced.