How do you overcome your insecurities?

I have some body issues and I just don’t feel like there is a light at the end of the tunnel. I was seeing a therapist for other issues and somehow my insecurity came up. I quit going because talking about it only made me feel worse, and that’s not really what I wanted therapy for. It’s not a weight issue so I just don’t see how I can fix it. I try working out and that helps, but eventually it stops helping… It can make me feel worse actually. It’s really hard to say/write everything I feel… but I guess for the sake of getting helpful answers I should. Basically I just don’t even feel like a woman. I have literally no breast (breastfeeding for 15 months made this worse.) and no figure. I work out and try to build muscle up in hopes of getting some curviness in my butt and legs but the only place I build muscle easily is in my upper body, so I end up looking more masculine. I am thinking about getting a personal trainer, but I don’t think that is an option financially right now.

I don’t know what else to do. It is so bad that it can even cause silly fights between me and my husband. He hates it. I hate it, but I feel like the more I think about it and try to deal with it, the worse it gets!