Shun unwanted drama that creeps into your life. Recognize it as quickly as possible so you can resist getting hooked into it. The drama may be generated inside yourself, regretting the past or jumping out into the unknown future with worry. Acknowledge that you were engaging in regretting or worrying then bring yourself back into the present. If time and circumstances allow, do some meditation or listen to guided meditation to clear your mind.
Unwanted drama can also come from people in your life, especially those closest to you, who have a need for drama. Resist getting hooked into "the dance" with the other person. Try to recognize "the dance" that usually occurs between the two of you-- unhealthy patterns in your relationship-- and make a change within Yourself.
In practicing zen living, choose your path of peace as often as possible! :)