I often read about the amazing gadgets that people are using to run their GTD system but I'm an old-fashioned type and have been using paper to run my system for at least 2 years now. I find paper works brilliantly for me. A few years ago I had my lists in excel and they just weren't particularly attractive. I found myself being reticent in wishing to look at them and use them. Paper and pen is just more comfortable somehow.
I have just reinvigorated my lists at
work by printing lines onto A4 coloured paper and using different
colours for different contexts. It's made them really enjoyable to work
with - a simply change that has made a bigger impact than I expected. I have surprised myself at how much more engaged I feel with the contents of the coloured lists compared to the "boring" white paper lists. The tasks haven't changed at all and yet I am convinced that I have been more interested and productive since the change. The brain works in strange ways!
Aside from just enjoying the look of the colours, the change has a practical purpose which allows me to find my different contexts more quickly, as each has a different colour. I think this has definitely helped me to improve my processing speed.
I guess that sometimes the old saying "a change is as good as a rest" really can ring true. So I would recommend that if your lists are feeling a little stale, then even a small change can help you reconnect and get back on track.