"Apply yourself to Bread" - A Proverb in the Making?

"Apply yourself to Bread." was a motto/proverb/life lesson/random, out-of-nowhere statement that the brother of a friend of mine created once. Sure, it doesn't look like it means anything, but the same is true of a lot of proper proverbs. At a first glance "Fine Words butter no Parsnips" doesn't look like it means anything either, you're just used to it because it's had a couple of centuries to ease itself into common parlance whereas you'd never seen "Apply yourself to Bread" until a few sentences ago. 

I've definitely got my own idea for what it means (But I'm keeping that to myself), and I think it's got the makings of a new proverb. I definitely take it more seriously than I take that "Inside you there are two wolves" thing that was going around a few years ago. It doesn't even need to be an interpretation that you agree with, there's loads of proverbs that, in my opinion, aren't true. (I've definitely had a free lunch, for example.) 

Feel free to apply your own meanings to "Apply yourself to Bread" in the comments section below.