Also, some artists have difficulty working on pieces for more than a day. I've have this problem, big-time. I used to struggle with continuing something I was working on the previous day. Starting new drawings was easy. Some artists get around this by only making pieces they can finish in a day, this is why they can post daily.
Deadlines make me miserable, since most of the time my health makes it difficult to adhere to them and I constantly have to extend the deadlines I make for myself. I'll figure out how to approach this in my unique situation somehow.