In addition to the above ‘distraction’ method, this post by @Kub933 describes another effective way to get back to neutral or feeling good:
Where the distraction method may work better in situations where one is overwhelmed, or for a beginner, Kuba’s ‘freezing’ method is an effective & straightforward way & has the benefit of keeping the issue directly in view so it’s clearer to investigate. In my experience both options are good depending on the situation.