You remembered correctly,
End in Sight. I will have to look into your suggestion. The reason I never tried it out is because of a concept from psychology that made sense to me, which basically says that when you are working on something, work
really hard at it. However, once you're done with it, put it behind yourself and go forth and enjoy your day/allow yourself to have fun.
That's the basic conceptual framework that I've been bringing to my spiritual seeking, I would say. While practicing, I focus 100% on the actual act of practicing. However, once I'm done, I try to not hang on to that attitude of being mindful as I'm going about my daily activities.
I find that I get discouraged very easily if I do not have a very concrete plan for my day. For instance, if my day looks something like this:
meditate --> work --> do yoga --> eat dinner --> play guitar/work on music --> watch a movie --> meditate
then I can be very mindful during each activity (and not so mindful in between). And I guess maybe that's what you mean by being mindful during my daily activities. However, there are days/times when I do not plan out my day as I just showed above (aside from making sure to practice), and it's very hard for me to be mindful of "bare existence" like that. I guess I need to feel as though I am being very productive in order to be mindful.
So, I'm going to try and plan out my days better with "meaningful" activities to encourage mindfulness.