Hello, I am 23 years old, n I have a problem that I forget many thing in a short period of time, for the reason I am unable to work or learn things, I am just ashamed of my personality, I forget the things explained to me, I do not even remember what was explained to me 10 minutes ago, I was actually addicted to weed ,now I take it often, I am preparing for my curriculum examination, and I am not being able to learn anything, please help me out, I am in a great problem.