"Important tool" refers to something that is necessary or valuable for achieving a certain goal or task. It is a crucial resource or instrument that helps you effectively accomplish a particular objective. Full definition
One of the most important tools for building a healthy relationship is knowing how to process a fight in a way that helps you learn from it. (gottman.com)
The integrity of our most important tool for understanding is being destroyed and it's time to recognize and address it. (climatism.blog)
Because books can resonate with children, they can serve as important tools in helping children feel powerful and take action. (edutopia.org)