Feeling like a Failure when You're Not

I just read an interesting article about how people feel like failures while on a weight loss program not because they are not losing weight but because they are not losing as much as they want to. I have definitely been caught up in this game in the past. I aim to lose every week. That is always the goal. It doesn't always happen. I don't feel like a failure in that moment, but I do feel a little bit like I'm failing because I haven't "lost all the weight". I just did a rough calculation based on my starting weight and where I roughly think I am now and was astounded by my weight loss percentage. Astounded. I am many things but I am not a failure. Even at weight loss.