person A: I am trying a new diet to treat my Lupus.  
person B: Really!  Good for you!  Are you excited to start or nervous?
person A: I am nervous b/c so much rides on if this works or not.  If it doesn't than I have to take some really powerful meds that i would rather not take
person B: It's OK to be nervous_comma_ but don't let it stop you!  No risk_comma_ no reward!