I'm So Ashamed

I need to get this off my chest. I've been living with this for too long, and it's eating me up. A few years ago, my best friend, Lisa, was going through a really hard time. Her mom was sick, and she was struggling financially. I knew all this, but I was so wrapped up in my own life, my own petty problems, that I didn't really *see* her. I'd make excuses not to hang out, or I'd be on my phone the whole time we were together. She needed me, and I failed her. Her mom passed away, and Lisa moved away shortly after. We haven't spoken since. I think about it all the time. I was a terrible friend, and I don't know if she'll ever forgive me, or if I even deserve it. I wish I could go back and do things differently.