It all comes down to need; what needs one has and how relevant and important they may be to life and in the moment I guess. If something is important enough it'll get some, or should, but other things can be left. I think it's important to have the ability to prioritise.
I'm no expert and have done things sub-optimally in the past (may in the future too) but having a little focus on these things is preferable to no focus.