['I will be starting Law School in January.', "That's seriously impressive. Sounds like a lot of work, though. Hope it all works out. Are you nervous?", 'I am.  It is a goal I have had but have never made the jump until now.']
Well, you sound confident. And applying and getting in is one of the toughest steps, so I'm sure you'll do fine.
I am nervous about going to law school soon