I had trouble sharing in early recovery too. One thing I discovered is that sharing does not always come in the form of speech, we can share with our hands and hearts too. I am very good with my hands but a very quiet person by nature so
people know me as the guy who takes out the trash, makes coffee, cleans tables, etc. For over 12 years I have made a point of humbly serving and helping others in order to take the focus off my woes.
I continue to seek only progress and will never achieve perfection.