My answer to this question has evolved a fait bit over time, and probably will in the future, but at the moment I find that making sure that I deliver at least one item (however small) every week helps; I feel I am always making progress. So if you have big projects, break it down into simple, manageable steps & tasks. Then work your way down the list.
Edit: this bizarre story has been picked by other news outlets, so maybe there's something to it.
https://www.theguardian.com/technology/2017/nov/07/facebook-...
http://www.zerohedge.com/news/2017-11-06/facebook-now-wants-...