The Software Engineer's Guidebook

This was recommended by a colleague and I found it am extremely worthwhile read. A lot of the points the author makes are ones that I have heard before but having them gathered in one place is valuable - I took copious highlights. There were also plenty of interesting ideas that I had not come across or considered, and despite being early in my career I feel that reading the book at this time was still worthwhile as I am now aware of various concepts that I can apply as I get more senior. I think any ambitious software engineer should read this book.