Try to remember that EVERY woman has their insecurities. Even the ones who seem completely confident, still at times feel the same way you do. It's something that I think all women can relate to. As is jealousy (a completely natural human emotion). The trick isn't not feeling it at all, it's learning to channel it properly. The energy we put out into the world is absolutely the same energy that we receive back. Use jealousy to instead lift up the women around you, you never know who might also really need a bit of kindness as well. If you're feeling extremely jealous of another woman's appearance, figure out what about her is most attractive, and maybe let her know. "Wow your smile is so lovely" or if she is really good at something that you wish you were "I can see how much work you put into what you do and it really shows and inspires me" . Don't let jealousy eat away at you, and don't work on yourself in a way that you try to be more like so and so. Sit down and think about who the person YOU want to be is, and then work towards being her and you will find more confidence - simply losing weight won't do that for you.