Most know Robert Ludlum from the Borne Identity & Series, I know his earlier books and have always loved his writing. Sad he is gone now as newer books just aren't the same when written by others - but will re-read the older books now!
Martial Arts are too rigid in style. Forget them. Pick up Krav Maga. Developed in Israel, this is the perfect real world self-defense fighting technique suitable for everyone. For an example, you can see the Jason Bourne Movie Series.