when I took a break from writing it was very hard to come back

I agree with you on that. It's a kind of habit that we tend to lose and it's always much easier to lose a habit than to build it back up afterwards.

As a daily writer, I strive that at least part of my posts should be useful to my readers

I think that if we bring value just to one person then our posts are already worth being written and of course not every word can contain value. I think that this is a nice target to try to attain with our posts.