You're already at a very healthy weight, and I think you might want to step back from the weight loss and look at why you're feeling this way.
Take some pictures: compare them to how you used to look. Sometimes we can't see the change in ourselves and we think that we need to lose more weight.
Also you might consider taking up heavy weight training! Chances are you're looking for a "toned" look and losing more weight won't get you there. Heavy weight training will usually get you there.
I'm a big weight lifter and it's really changed my life

Weight training has shaped my body and made it possible for me to GAIN weight and fit into a smaller size (I just posted about how I now fit into 00s despite possibly gaining some lbs) and made me feel awesome. It's really hard to feel bad about yourself when you realize how STRONG you are.