I am typing and erasing here, because I wrote a bunch of stuff then realized that it's way too personal and specific, so I'll try to make it a little more general.
I have a family member who, like me, has been struggling with some extra weight. Not a ton, maybe 30-40 pounds. Enough that would make a difference on her medium-sized frame. She's not nearly as tall as me so it would really make a difference. She is very well aware of this and we talk about it when she brings it up. She's very discouraged. She knows how to lose because she has done it before, but she is under a crushing load of critical comments from her mother and her spouse. Her spouse is especially critical, saying things like, "You say you want to lose weight, but you're not willing to do the work!" and "Oh, I see you bought another book about weight loss" in a sarcastic tone. Her job is very rewarding, but also very busy and stressfull. She is a really kind-hearted person who always sees the positive side of things and offers encouragement to people who are down.
What can I do? She doesn't need tips or suggestions from me; she needs acceptance and encouragement and that's what I've been doing my best to provide. But is that enough to counter-balance the caustic, careless, hurtful comments that others are aiming at her?
Why do people think these kinds of comments help? DO they they they will help, or are they simply being mean? Do people really think this kind of criticism is going to motivate someone?


It's not a big lecture or anything, just when she complains about things she doesn't have to do, I mention it.
I am glad you have learned to tune her out to some degree and keep going.