I also take lithuim with lamicctal, wellburtin,effexor, abifly, akindoll. I am diagnosed bopolar i don't know if its bi-polar 1 or 2. I have memory loss since a few years, my suspition its from effexor not lithuim since i only started lithium on january this year. maybe it is both of them.
I have trouble driving in driving around, I get really scared for a second when some car jumps infront and i'm forced to press break. ( we have pretty bad drivers where i live ). i start to imagine bad things will happen while i drive, i worry a lot when my father takes the car and drives because he is a bad driver i think because of his age, same with my mother.
I don't worry so much about memory loss though, yes its very anoying when your doing a presentation or in a important meeting etc , but I know that the brain has enough cells to cover the the cells which are not communicating , I heard the amount of cells that are used compared to the ones which are unsued is very small, so there is a lot of cells available even when you die in old age. thats why you can learn new things at any age, offcourse this doesn't include people who have sickness that holds them back (i.e. Multiple Scolaroses, alzimer and others ).
Anyway good luck, and try to beleave in your self and GOD and you can do it
To be or not to Be