The most important thing to defeat the urge to run away into newness is to recognize it for what it is-escape. fun, wonderful escape, but still escape. I have developed the five day rule-if I still want to take the leap after five solid days of thinking over an issue, then I need to consider a real desire and not a fleeting escape path.
Even then, the most important thing in the world is to speak about the issue to the other person (if a person is involved) and give them the chance to talk through the issue. Sometimes I find I am so hesitant to speak of what bothers me, that escape seems an easier path than confrontation.