Who would you pass everything on to ?
I have been thinking about this a bit. I guess it could mean that you are just either deciding to be doing something else, or you are moving and can't take everything with you, or you are "willing" it to somebody. That sort of thing.
So, I am talking about your instrument(s), your scores, your books, your recordings, perhaps your students, your research, just everything !
For me, I really am not sure. Ultimately, I think I would like to leave it all with somebody I love and whom loves me, but would somehow get some "use" out of all of it. So, my family comes to mind, but they would not necessarily "carry on" with any particular thing, nor would they necessarily appreciate the scores and research, and instruments and such. I mean, they may value them because they were/are mine, but not because of what they are, necessarily.
And, students come to mind, but it seems it would need to be somebody very particular, especially if it were truly a lifetime's worth of work.