Becka Yelland wrote an article on Mind the Product which I highly recommend: Moving From Product Management Into Product Strategy. She originally refers to why a Manager of Product Managers (the leader) should have a Product Manager (the doer) earlier. However, I find it much more interesting that she recommends being organised well, and I recommend this for the doers as well.
Apart from strict time management, she is a supporter of lists (and so am I):
- Write everything down
- Make daily priority lists
- Be uber-organised in your note taking