Struggling with parenting

I am really struggling with parenting my two boys. I really want to put them up for adoption. They are both under 4 years so it’s possible. I’ve talked to an agency. I am single. I suffer from a personality disorder and I have a hard time keeping jobs and going to school. I cannot provide a stable life for them at all! I feel like this is best for them. I don’t think I am fit to be a parent anymore.