If you can identify the source of your stress, remove yourself from it or address the situation. That may be all that is needed to resolve the situation and your anxiety. Even if you are only able to get away for a few seconds or minutes, the break is important and can help you on the way to a more permanent solution.
This break can be accomplished by physically removing yourself from the provoking situation (such as an argument) or mentally removing yourself from the stressor (such as financial worries) through a mental distraction, often called a time-out.
The point of these actions is to allow you a moment to relax and formulate a plan for dealing with the problem at hand. Just having a plan can be a great stress reliever. It gives you a set of positive steps that you can work on to get yourself back to your baseline and out of the stressful situation.
These steps should be broken down into tasks you can accomplish easily. Working toward a goal is rewarding. It prevents the hopelessness and lost feeling that can accompany stress and make it worse.