The latest edition of PragPub is out, featuring an article I wrote on embracing the full stack. This is more of a motivator for why you should be more well-rounded as a developer (which then should motivate you to buy my new book :). I cover things from grid-based design to database indexes.
This may seem like an immense amount of learning and work, but it hopefully feels more achievable now. You could get a cursory understanding of these topics in a week. What happens when you do is that you start to take a more holistic view of your application and of how to build features.
Pick up your copy here