I went through that same journey in 2008. You can do it!

There are a number of cycling clubs in the area that you can join and may help with motivation. I'm in Rancho, but time is really tight at the moment. Been spending time on the MTB on the weekends rather than the road.

Make sure you find a good route to the bike trail that runs along the river. It's a great resource. From Rancho there are a couple of places to pick it up. I use Hagan Park.