DiSC® is a personal assessment tool used by more than one million people every year to help improve teamwork, communication, and productivity in the workplace. Leaders become more naturally effective when they understand the dispositions and preferred working styles of not just themself, but also those they work with. With over 40 years of research-backed assessment expertise, it helps creates a common language and self-awareness. Here’s me – I have a Di style and it’s pretty spot on.