How do i improve my memory?

i am on effexor XR 225mg and zyprexa 20mg and am Borderline personality disorder and servere chronic stress disorder with anxiety and elements of PTSD. and i have problems with memory i can't sit for a long period of time like watching tv i can't get through a whole movie without becoming bored and i the same with books i cant read them as my vision goes blurry and i have gles as it is so my question is what can i do to improve memory ? i do read books, watch movies , and do crosswords when i can so what do you suggest?