The success stories always make me think twice about things.

I quietly logged on here for several months before getting involved in the MFP community, but once I did that it helped me tremendously. You've obviously discovered groups but there are a ton of them out there so join several that interest you if you haven't already. When you come across someone who posts things that resonate shoot them a friend request (I usually tell them where I saw their post). The motivation goes both ways - you will find the act of encouraging others gives you motivation too, if you're willing to follow your own advice.