Is the internal strife and procrastination affecting you, in your career?
One thought reading was my own recollections of procrastination can be one of numerous descriptions of a childhood that included family dysfunction. There's mention of addiction in your post, is food the only in home addiction?
Loss of will power is mentioned, as well as needing to sleep 10-12 hours.
Are you current on your physicals? How long ago were you diagnosed with an attention disorder? Does your therapist feel that shame was carried over by your mother's past? I'm presuming there's counseling since you're taking a prescription stimulant.
Are you experiencing other symptoms that would fall inline with a past head injury? Any types of hallucinations, mild or severe? Auditory, visual, olfactory? Neurologists would typically order such tests, as an MRI. Your primary could refer you, if presenting with a wide array of symptoms that could result from such a past head trauma. Do you get migraines?

You could print this out, and show your physician, they could then help you address this. Since it does sound very debilitating. It's better to gain clarity, to help you feel better and more functional.

Glad you found PC.