Computers are great. We love them. But when you are first working on an idea for a logo, it pays to go low-fi – start on paper.
Using a pen and paper will allow you to concentrate on your idea and not get distracted by drop shadows or fancy effects. Once you have your idea developed, draft it on a computer and take it from there!
Sketching out your idea, creating a mood board, and using anything you can to convey your thoughts and ideas will help a designer in creating and realising your vision. Once you are started you will start to feel more about the meaning of the logo and branding than you would in the digital domain alone.
Once done a designer can scan and digitise your ideas and then get them into usable formats for deployment across all mediums from print ton TV.