When The weather is cold and its "time out" its time to "read up" on the things you want to achieve. I always found if for some reason I could not work in the garage, I would read up on some of the stuff I wanted to accomplish or learn more about. It would motive me when the time presented itself and I had a "plan"on how I would do things more systematically. Use you time well and take your time.
Best tool in the tool box is knowledge and of course this site. Good luck and keep us posted.
Dave
