I think journaling is a great idea. Just putting those thoughts out there has got to be good - to release.
I understand your feeling overwhelmed, this happens to me too. Ultimately I gave up a group (hobby not therapy) because of it had got so big I no longer felt comfortable there. I think this contributed to me becoming less socially confident. So I am not a good example of doing things the right way - rather an illustration of what (dropping out) can lead to.
Low hanging fruit is a good strategy- and I will lay money that right now there are at least one or two people wondering where that nice Wovengalaxy went. I think you have a lot to contribute and I for one prefer gentler personalities, of which you sound you are one.