What about making it easier on yourself by just taking one class for now and forget about the whole career/degree thing for a moment. It seems to be overwhelming you, so take the pressure off. Order a catalog from your nearby comm. college and look for a class based purely on enjoyment--art, literature, science. Whatever floats your boat. Don't worry about if it'll fit in w/future ciriculum (sp?) requirements---most likely it will, under electives---for now just take this one step.
The first month or so will probably feel really weird, but you will quickly acclimate and feel more comfortable. As the semester draws to a close and it becomes time to decide whether or not to continue, you will have a good idea of what you should do. Remember---take a class of pure fun!