When our minds are fixated on gaining something, we tend to be narrow. We define things in terms of what we predefine rather than seeing the totality and resting in it. This can take the form of a kind of empty space or a feeling of not knowing what comes next or what to do next. It's important in that moment not to try to "add anything" or "subtract" from the experience as is.
If we are trying to add something, it's like sticking a conclusion on top of something that has already concluded. We are straining to complete an already completed moment, which adds to our view that the moment is incomplete. This only creates vexations.
On the other hand, trying to subtract from experience through simplifying it, is yet another subtle form of vexation. It is as though we are seeing a big banquet and then we tell the host that this is too much food and we are overwhelmed by the selection---so much so that we can't make any choice.
In between these is the view that mind in the moment has already been perfected. We don't need to add anything new to it or take away from it. We are free to observe things arising as they are.
This practice needs a sense of clarity and being in the moment that is sometimes hard to realize. But we can use anything to practice on it. When we are working, we practice resting contentedly in the exact nature of the work itself even when we may sense we lack the tools needed to perform the job thoroughly. Simply observe the unfolding process and trust that the mind is already deeply connected to it. When resting, we simply rest in the enjoyment of resting, without adding more or less to the experience. Encountering others, we don't need to add anything additional to what is really unfolding, and there is no need to placate others. This involves simply letting things be, but also open to taking on whatever needs doing. In other words, we don't need to be afraid of any phenomena.