What works for me is to take my focus OFF the problem through something physical. For me that is running. People close to me know when I haven't had my run! It almost instantly calms me. I also do chakra mediations while I run instead of thinking of what ever is bothering me. When I do this, it is funny, because at the end my my run I have more clarity over my trigger (without even thinking about it). When I try to do positive thought replacement or try to rationalize the problem- I am STILL focused on the problem, thereby FEEDING it. I believe this happens because when I run, I am instantly grounding myself- quite literally. Hope this helps!