I gotta be honest, I feel like I'm just a worthless liar and an imbecile.
Why would you consider yourself just a worthless liar? Are people telling you this?
Some of my friends, they were talking about me
You should re-evaluate who's you friend. Friends don't insult one another with cruel names and blame.
It's not their fault, I did it.
I understand you may have some faults, and I'm glad you're able to see these faults. Friends should be supportive and try to help you out of this, but they seem to just be harassing you.