This is inspired by vipassanā, but one technique is to not fight thoughts as they arise (which can be counterproductive), but rather to acknowledge and understa

This is inspired by vipassanā, but one technique is to not fight thoughts as they arise (which can be counterproductive), but rather to acknowledge and understand them for what they are: unreality. So when worry arises, you might try labeling it in your mind: "Worry, worry, worry." That may sound trivial, but you may also find it calming. Can you really be defined by a decision you once made?