I think that remembering who you are also involves acting who you are. Don't feel guilty in leaving bubs at home with your DH to go out for lunch or dinner with your girl friends, or going out on date night wiith DH, reading a book that has absolutely nothing to do with how to settle an over tired baby etc.
Take some time out from plnning for bub and go out with your DH and do some of your old stuff, even if it is something that seems really anti baby like go out dancing, or see a live band, if that's your thing.
Are you planning on keeping up your herb business once bubs is here? I know that that is work, but it will help you to remember that there is more to you than being a portable milk station etc.