Instead of managing some of my more intense emotions I've communicated what changes this brings about in me to my partner. There are times where I have to vent so I give fair warning that what I am about to do is "venting" and then I can think about it rationally. I spout off a bunch of mostly nonsense which relieves my internal pressure and after a cool down period I can see and think clearly again.
There are some emotions that I know will pass and will only cause my partner emotional uncertainty so I've learned to repress them until, like a rain cloud, they dissipate.
I know this approach is not very enlightened but I also know it works for me...I think