I work with people who need a lot of help (not as a T) and have been pretty surprised over the years how much help it takes for people to be able to use your help. People definitely need, much of the time, more help than just doing your job. I've been the recipient of "extra" help from my T's.

I think a lot of time people just use the word "boundaries" as a way of not getting involved in actually helping people. There's a big difference between boundary crossing or even breaking that harms people or takes advantage of them, such as paying your clients to do your laundry or clean your house or "investing" their money, and those that are just helpful to people, like giving them a ride or babysitting their children when it's not part of your job. When I used to mentor young professionals, I often suggested they do the "nonprofessional" helping but never the other.