[toomanyducks]

If you're talking about depth over breadth in some particular technology, that's not too hard: regardless of what project you're working on, you can shove the new technology into it. I'm learning some LISPs, and I'm going to incorporate some Racket into my current academic project. I'm learning Rust, and using that everywhere too. With regards to specific technologies, everything's pretty versatile these days, so if you make a concentrated effort to use them wherever you're already focusing, you'll be good.

Now, if you're talking about depth over breadth in terms of projects, and you just can't maintain focus on one, I am in the exact same boat.