While it is good advice to keep at something every day if you want to get better at it, I suggest taking a day off every now and then–not once a week (unless it’s an exercise, in which case you don’t want to overwork yourself and should take frequent rests), but every few weeks or months, do either very little or nothing at all to do with it. We need to have a chance to adapt and grow once we’ve become accustomed to the presence of something. In order to strengthen the bonds between neurons (or muscles, or whatever it is you are working with), you need to stop forcing them to apply all the effort and let them “recharge”, process the information, and then be ready to continue.
It’s important to remember that breaks are not permanent and you should be able to continue working, whether you “feel like it” or not. The human body is very conservative with its energy. In order to survive, we want to store our energy, we want to take a break, and we want to stay lazy, in order to prevent wastage of precious resources in a world where we don’t know when we’ll be able to replenish them.
Now that the world is increasingly “modernized” (though really it just is what it is), those who are at the cutting edge and equipped with enough money and resources now have plentiful time; and, unfortunately, with the technological revolution, we are developing industry exponentially and our genome doesn’t have time to catch up for us to adapt to these changes. We still want to be lazy. This is why, even at the cutting edge, we are lazy, unproductive drones. It would probably be better to wait before continuing on our wild and swift-moving path to our future, but we’re losing the patience for that. We want what we want now, and yet we’re no longer willing to work for it. I can see civilization crashing itself into a tree on the way, but I’m not here to spread a doom-and-gloom, the-Earth-is-coming-to-an-end attitude. I’m just saying be active and vigilant about yourself, what you want, and what you are doing, so you can benefit from the world you live in.