I recently have been unable to work, due to psychiatric disability. Even before that, I could no longer work at jobs I'd grown accustomed to. I didn't serve my country (though I was on delayed deployment after high school). I was diagnosed with cancer and since then my dominate arm has a lot of difficulty to use, but it's gotten better, I just can't lift like I used to and such. Took me forever to even be able to type. On top of that, I have a huge scar that extends from the left base of my neck to the side of my face at my ear, and also has a branch into the front of my neck at my throat. I thought I had self-esteem issues before, haha. Anyway, I whole heartedly believe that I'm ugly as hell. I also believe that I'm lazy because I can't work. Others have started feeling the same about it. I still have a couple friends and my fiance who disagree, but that doesn't make me feel like any less of a burden. I had a semi-similar upbringing. I know what it's like to have the need to help and put others before myself. I also know that many people out there will take advantage of that, every time. There are good people out there, though. People that will understand. It takes some searching and patience, but please don't settle with someone that will hurt you again. Don't settle because they need help. You can't save everyone, especially those who don't want saving. They'll use you and lose you.
You deserve better and you've sacrificed too much as it is. You can still be kind but protect yourself, at the same time. It's time to care about you.