If you can break a massive task into smaller daily portions, it’ll be easier to finish the whole project. You can write a whole book by tackling just one page a day. If you write 300 words of a book every day, by the end of a year you’ll have over 100,000 words.
Daily practice can make large amounts of progress mindless compared to taking it on in one big swoop. Not to mention, some things require you to make daily progress or maintenance.
For instance, you cannot neglect your language learning for weeks on end and then catch up on all your learning in a few hours. You have to put in time every day and build on what you created the day before.