Let's phrase it another way: Is it good to make decisions about your future while 60% of your brainpower is focused on cleaning dishes?
You'll do both things more efficiently if you give them your all rather than having your attention constantly flit between them. Imagine if, while programming, you had to switch between projects every five minutes. You'd never get anything done! Yet we expect our brains to perform well under the same harsh circumstances.
Of course, if you don't care about what you're doing, it doesn't really hurt to let your mind wander. You'll probably do a sloppy job, but you don't care anyway. But the real payoff to concentrating on something like washing dishes is that your mind gets better at concentrating, so you'll instinctively do it when it really matters. It's like muscle training — you don't want to wait until you need to heft a couch to start doing it.
> Is it good to make decisions about your future while 60% of your brainpower is focused on cleaning dishes?
Brain doesn't work like that. You can actually do stuff in parallel without performance penalty as long as the tasks you are doing use different types of mental resources. I find it easy to wash dishes well while simultaneously planning my future / thinking about whatever. Quite often the thinking I do while washing dishes or in the shower is much better in quality than the thinking at my desk or near the whiteboard.
You'll do both things more efficiently if you give them your all rather than having your attention constantly flit between them. Imagine if, while programming, you had to switch between projects every five minutes. You'd never get anything done! Yet we expect our brains to perform well under the same harsh circumstances.
Of course, if you don't care about what you're doing, it doesn't really hurt to let your mind wander. You'll probably do a sloppy job, but you don't care anyway. But the real payoff to concentrating on something like washing dishes is that your mind gets better at concentrating, so you'll instinctively do it when it really matters. It's like muscle training — you don't want to wait until you need to heft a couch to start doing it.