I'm not 5'3, so feel free to ignore all or any of the following.
I lost 100lbs about three years ago, the first twenty pounds were the hardest but after that I got into the swing of things and really started to enjoy getting smaller and the constant positive feedback. Most of life is difficult and we often don't know if we're doing the right thing, even when we are doing the right thing, we often don't get the results we want, however, the scales are very reassuring, if you eat at a deficit, you get lighter. It's one of the few things that we can have absolute control over.
I think that this feeling of control can become a bit addictive, well I know that it did for me and I kept dropping my goal weight, which wasn't the healthiest thing in the world.
Of course, I don't know you, I don't know what you look like, I don't know your body fat percentage, I don't know your body shape, maybe none of the things that happened to me apply to you at all but I do think that after a significant weight loss, it's worth spending a little time mulling over why you do want to get smaller, what it will cost and exactly what you will get out of it.
Best wishes.