i couldn't be bothered to read the whole of this thread , but in response to the OP .... I am friends with a person with a schizophrenia and she smokes like a rendering plant , her mother also has schizophrenia and is the same ... It is very common amongst people with psychotic diagnoses to smoke and to smoke heavily .... this could be that the nicotine has some therapeutic effect - I am thinking the MAO inhibitive properties of tobacco ... but then again it could just be that these people have a great deal more stress to deal with and the addiction takes a greater hold .... I am not sure . What I am pretty sure of is that by vaping as opposed to smoking cigarettes you are doing yourself a great deal less harm - a 20th apparently according to the experts - . vaping is an unknown unfortunately when it comes to long term effects , although it seems reasonable even intelligent to assume that whatever those long term effects are , they will be less damaging than the already well documented effects of cigarettes . The fact that is an unknown quantity to some extent though, is unsettling , particularly to those people who find unknown quantities unsettling ! so , I don't know , try and not be so hard on yourself . With all the information at your disposal you have made an educated choice to improve your health and quality of life , and ig you have switched over to vaping completely that is an incredible achievement