What is to be agile?
Formally speaking to be agile means to respect the values of the agile manifesto. In your daily/professional life being agile means to be flexible enough to embrace changes later in the project; to be creative, communicable and positive in such an extend so that any software tools could ever replace this; respect people you are working with, value people over papers, foster information sharing; being focused on the end product of your work, not the intermediate results.