Here's a revised version of your text:
"I know I can be selfish for going to school every day while leaving you at home, but the truth is that I've struggled with my own demons. I've tried many times to end my life, but since you came into my life, I've seen a glimmer of hope. Kabelo, you have always been there for me, standing by my side during my darkest moments. Even when I felt emotionally abused by my own family, you never left me. Thank you for being my support."