I strongly recommend attending writing conferences.
The conferences I attended convinced me to revise my novel, again. Thank goodness I did.
I know it is difficult to get away - trust me. My life is crazy. The price of the conference and travel can be expensive, but it is completely worth it. Really find a way. Look for a local writing group in your area or conferences offered by Society of Children's Book Writers and Illustrators There are national and state conferences.
If you truly can't attend a conference, attend a free conference online. You can participate in your pj's. The 2012 line up looks great as always. Your time will be well spent. If you can't attend all, choose a couple of events you're interested in. You can also go back and read through afterwards. This is not as much fun!
Write On Con