Eight years ago I read the book Radid Development by Steve McConnell. In this book Steve presents the classic mistakes in software development and I found it "very funny" to notice that my company was doing exactly the same mistakes that Steve pointed out like: Feature Creep, Gold-Plating, Adding people to a late project, etc.
Today I came across a interesting whitepaper where Construx updates these classic mistakes after surveing 500 Software Practicioners. They introduce some new classic mistakes like Confusing estimates with targets or Excessive multi-tasking among others.