With regards to the weight loss or something else that matters to you, its probably because you have high expectations of yourself and when you see / hear others 'beating' you, it's because you naturally push yourself that your first thought is 'oh, i could have done better - if she/he can do it, then I can do it'. I don't think there is really too much you can do to change this because its a part of you & your makeup and is what drives you to achieve things. I think if you can change your thinking to perhaps being inspired to do better next time rather than disappointed in your current result (and this relates to lots of things, not only weight loss ) then you can use the emotion rather than getting upset by it.

With regards to not being listened to by extended family -when you have the answer can you send it my way??