Here is a great article from the Wall Street Journal on how to be healthier, happier and more productive in 2018;
https://www.wsj.com/article_email/how-to-be-healthier-happier-and-more-productive-its-all-in-the-timing-1514560647-lMyQjAxMTA3MTMwMDAzNzAxWj/
There are many great points within this article – many of which are simple, block-and-tackle logic, but a productive read, nonetheless.