Do not let anyone discourage you from doing this who hasn't been where you are.  You are right about walking a mile in your shoes, people just don't understand.  Yes it costs alot but I try to think this money spent now will help me to not have to spend a bunch more money later because of all the issues around being too fat, especially health care costs!!  Glad you feel encouraged.   Have you booked your date?  I wish you well and just ask anything if you need it.