I once recorded some audio tapes, so that I could listen while working and driving. After reading several book (~20 hrs each) I noticed that I had become

I once recorded some audio tapes, so that I could listen while working and driving. After reading several book (~20 hrs each) I noticed that I had become more glib & talkative - I think it improved my voice & diction, and helped my confidence. I need to do something again, I like the other ideas: practice - but I'm thinking of more recordings, too.