How to approach motivation for work during Vipassana? My career involves lot of self-learning, and self-motivation. I like my work, which is a reason why my work doesn't feel like work. However, I am finding it hard to incorporate Vipassana into my work. For example, if I'm working and I'm in the zone there's a general pleasurable feeling associated with motivation/focus. It's what keeps me going. I feel like it's a mental state that's actually valuable specially in today's society full of procrastination.

However, if I mentally note that sense of motivation/focus, it does fade away, but it makes it harder for me to concentrate and enjoy work. In fact, I even get slightly depressed and begin to hate the work. Then I would mentally note those negative feelings, but they will come back and I begin to feel miserable, and like a robot. Will this go away? 

Should I constantly "mental note" my feeling of motivation/focus, similar to how one "mental notes" a feeling of anger? How am I suppose to apply Vipassana in this situation?
You are already dead might be a useful talk (or read the written transcript here).

I knew of someone who was participating in a series of seminars on death and dying. And for one of the seminars the teacher took him aside beforehand and said: Okay, I want you to tell everybody when we go into the room that we are already dead, and act as if you are already dead. Now, of course not lying there like a corpse on the floor, but having the attitude of someone who has already died, and is able to come back for a brief visit. And he found it liberating. He could talk to people with a lot less concern about what they might think about him, or what he could get out of them, or their approval. And then the following week when he came back for the next course he was his old self again, alive. And one of the women in the course took him aside afterwards and said: You know, I like you better when you're dead.
So it's not morbid. It's actually liberating, it's freeing. To be able to look at all your worries and all the concerns of daily life from this perspective. You've got a true sense of what is important and what's not.