In terms of living lighter, I carry much less work-related stuff on my bike, or in a briefcase on the transit system, than I used to. I always have some backlogged "paperwork" that somebody is rightly nagging me to complete, but it's all available to work on remotely, and stuff I want or need to read for work is mostly electronic now too. If I'm on the transit I may review stuff on a tablet, or check emails on my phone, etc. I don't bother with a briefcase most days - maybe just a plastic bag for my tablet if it might rain.

When I travel out of town for work I take a laptop, as I need the physical keyboard to be productive. But again, any documents or reference texts I might need to refer to are either copied to the laptop or available remotely.

I have a transit app on my phone but it hasn't made too much difference, as I commute on fairly frequently served routes