A bariatric doctor is going to tell you that you can't lose weight without surgery because his/her business is based on weight-loss surgery. If you don't want surgery, don't have it. Remove the weight the safe and smart way - it's been done before by people who have hundreds of pounds to lose, so it CAN be done!
Secondly, I read a spark tip from someone, or it was on their page, or SOMETHING in this site where she said, "Weight loss is a job." I've re-written this several times now because it's such a good and true-to-the-core statement. There are times you just don't WANT to do your job, but you have to. Weight loss is the same way. It's a job. So, you have to get out of bed and do your job whether you want to or not. We can pout all we want, but we still have to do our jobs.
So to that I say in order to get motivated,
1. Look at the weight-loss like it's a job. You've done a great job at this already, but just have to keep working.
2. Do all you can to spend as much time on this site as you can in order to stay motivated.
That's my best advice, and it's probably advice I was given from others. But hey, good advice is worth giving!!
Best wishes to you. You can do it!