I'm glad you found us secretface this is a safe welcome and anonymous space.
I can imagine it's very difficult to look after a parent, look after yourself and submit a PhD - but you're not alone now
Read around, post as much as you like - maybe check out the October support thread - its for everyone quitting this month - all you have to do to join is post
http://www.soberrecovery.com/forums/...rt-2-a-11.html
D