One of the hardest things to do as a writer is to return to an old project and pick it up where you left off. Right now I am so close to finishing book 3 in the Geodesy Series, Gravitational Forces, that I can taste it, but I keep leaving it and coming back. I have no more excuses now.

… But when people, my students or an interviewer, ask me how to have that kind of discipline, I have only one answer: obsession. No. That’s not it. Five minutes a day. …