Hi there ~
I understand your concerns. Long term use of substances and drugs of abuse might result in these kinds of issues including tunnel vision
as well as effects on the brain which may manifest in many kinds of issues including the ones you have described. It might be as well to visit a psychiatrist
who is experienced in drug dependence
and who is able to refer you to the right people to have the issue resolved. Psychiatric and substance abuse rehabilitation
is helpful in this condition. I hope you consult one as soon as possible.
I hope this helps. Take care and have a lovely day!