I'm also afraid you did not really understand what "dolce far niente"
means, but I don't know how to explain it in English. It's not
something that you can be proud of, or that can become a routine: if
it did the sweetness of it would disappear. It would be like enjoying
the Sunday rest after a week made of 7 Sundays.
I'll tell you exactly what it means to me, Dario, even if this is a little off-topic.
'Dolce far niente' is the opposite of the manner that many of us here in the States operate routinely. We're known for our work ethic & pre-programmed to have virtually every waking hour spoken for, be it work or family responsibilities. Thus, when folks come to Italy, especially for the first time, the knee-jerk reaction is to over-plan & pack as much stuff as possible into their time there, a constant fly-by if you will. That is why you see so many of us Americans on this forum that have taken multiple trips to Italy gently admonishing the newbies by telling them either to slow it down or 'you don't have to do everything now because you'll be back'. Some listen--many do not.
The ones that don't in my opinion totally miss out on the best part--sitting at a cafe or a restaurant or a park or browsing a shop, thinking 'what shall I do today?' That's why there is such an allure--only made stronger the more times one visits Italy--to the thought of 'geez, sure would be nice to spend a couple months here'. Of course, one has to possess the wherewithal to make that happen over that period of time! But I observe that though the locals seem to work hard, they also put that aside when the day's over & it's time to relax. I really envy their sociability, if that makes sense.
So, my definition/understanding of the phrase is not necessarily the literal translation of 'doing nothing', because you're always doing something. But maybe it's more the thought that without having your Italian time scripted out by the minute, you can do anything, at any time, on a whim. Sitting in Rome in the morning sipping coffee and saying, I think I'd like to have pizza in Naples for lunch---you can do that, as long as your daily canvas is relatively blank.
Someday, someway...