I use the following tools to do my work:

Planning and organising

Creating diagrams

Creating words

Reading

My notes and “second brain”

I have always maintained vast repositories of notes and reusable material that helps me think and that serves as intermediate work products that I can combine to create deliverables.

This approach is critical to be effective in the consulting profession. I recommend everybody do it.

I have recently discovered Tiago Forte’s concepts he calls “Building a Second Brain” and the concept of a “Zettelkasten”. I recommend you research these links.

I also recommend "How to Take Smart Notes".

My “second brain” tools are:

Things I use because I have to

How to create numbered headings or outline numbering in Word 2007 and Word 2010