Best way to get rid of stress is to find the problem, design a pattern that will give us the solution.
Anything else we try to do is just running away from it, it will be back to make us worried again.
Working under stress doesn't make us work more, working under stress make us look like we are working more. Just like when we are angry, we feel like we are powerful, but we are just out of control and we can do anything, that doesn't mean anger gives us power.
If we are calm and focused, we can do more work in less time than we can do under stress.
Some stress is unfortunately inevitable. The difference between stress and anxiety is that anxiety is more related to fear and the paralysis it may cause. Stress could be as simple as being uncomfortable driving. Driving is however inevitable depending on your circumstance...
But I agree that rooting it out is the most effective solution.