Yes, I believe that there are times to be "mindful" ... and there are times not. Sometimes when I eat, I just eat ... when I sip tea, I just sip tea ... when bowing, just bowing ... fully absorbed in that action. A wonderful, insightful practice. When doing one thing, just do one thing with all one's body-and-mind.
At other times, I just grab a sandwich and a coke while reading the newspaper and thinking about the job I have to do. That's life too. Nothing wrong with it.
In my view, the heart of this Practice is merely "being at one
" with this self-life-world just as it is
... dropping the resistance, barriers, separation between our "self" and all the circumstances in which that "self" imagines it finds itself in ... until even the walls between "self" and "life-world" (or self and itself
) soften or even fully drop away ...
So, for example, when drinking tea, just do that and fully allow that. When grabbing a sandwich while reading the paper and thinking about your annoying co-worker in the office, just do that and fully allow that (and fully allow the craziness in the newspaper and your annoying co-worker too
).** When your kid plops in your lap during tea drinking and the cup spills all over the table, just do and allow that. ... When suffering with old age and sickness of ourself or someone we love, even death, just do that and fully allow that.
In my view, all of the above together is truly balanced, "mindful" living. That is "being the moment".