This is an improvement over "Shattered Glass", but you're right, it is not clear. Do you mean??
Uncertain memories (clog) my (mind);
Guiding me with yesterday's lies,
Painting the image of tomorrows damnation,
Challenging me to remember
(What I want) to forget.
Uncertain memories filter (through) my head;
Challenging me to remember,
(Yet) Protesting (that I) forget.
(I'm) (guided by) yesterday's lies
(That) (paint) the image of tomorrows damnation.