Processing Emotion

How do you know when you are done processing emotion? I am going through some career drama and I am running my models and opening up to the resulting emotions. There are many emotions to process since I am looking to change career fields after spending a long time in my current position. So, I am processing the emotions as they show up by breathing them in and being curious as to how they show up in my body. But what I want to know is when do I start transitioning to the IM? How long do you stay in the UM and process the emotions the UM generates before moving to the IM? I imagine that there is some back and forth as you test out new thoughts and the resulting feelings? What do you think?