I always have a ton of projects in mind. On my ToodleDo list, I divide projects into those I'm actively working on, those I'm not doing but believe I will do, and those that sound good, but who knows if I'll ever get to them.

I'm a writer and I also do a lot of professional speaking on risk taking and creativity as well.

I spend a fair amount of time just thinking about whether something is feasible or not, and if it is feasible, whether it's really worth doing.

I specialize in science and history, with a special emphasis on including do-it-yourself projects in the mix. My dozen or so books have sold hundreds of thousands of copies. I'm also a contributing editor at Popular Science and at Make Magazine.

I have a large standalone workshop on the back of my property where I prototype and build stuff. It's bright, roomy, and has a giant door so it's easy to bring projects in or out.

Every day, I walk with my dog - summer, winter (it gets -20 F in Saint Paul), rain or shine. The nicer the day, of course, the longer the walk.

I'd love to get ideas on overcoming jet lag.