One thing that helped a lot was that by having a commute I had a pretty good excuse to bike, it only took slightly longer than driving and it provided a break between work and home, to give me more time to adjust between the 2 modes. Not having a commute removed most of the motivation to bike. I force myself now (and I hate it most of the time) to go once a week over the local mountain but that still means only about 20% of weekly biking time I was doing before with commuting. Still, it's better than nothing.