I read in a book[exploring the world of lucid dreams] that for some people, they try incredibly hard to build themselves up to lucid dream that they think of it as something incredibly hard to attain and therefore make it this way for themselves.

Maybe you want to lucid dream so badly that you have made it so hard for yourself because you're trying so hard?

I would suggest keeping up with a dream journal/reality checks but put a hold on trying to lucid dream for a while? I had this problem for a while myself, and after I took a step back and stop trying so hard they started to come to me.