Greatly simplified, this cognitive tension is the result of a mismatch or imbalance (dissonance), between 2 (evolutionary) separate evaluating systems of our central nervous (brain) system, cooperating and steadily competing against each other:
1.) a phylogenetically old, more robust, faster, more certain, decisive, and uncompromising, unspecific, less rational, archaic, pure "complementary", emotional/ limbic subcortial evaluating system and
2.) a phylogenetically young, less stable, slower, more sophisticated, weighing, compromising, specific, complex, rational neo-cortical evaluating system.
Depending upon the amount of functional cortical/subcortical human capacity the most feasible way to diminish the unpleasant feeling and to reduce “cognitive tension” between “the potential of the new and the security of the old” is to correct or reduce the imbalance between these 2 evaluating systems, i.e. increasing and strengthening the "rational" system by intensifying perceptions, information, knowledge, associations and concepts which will inevitably entail your convictions, affects, moods and values of self assurance.-
The most important precondition is a basic knowledge not only of Shakespeare's works but of all related contemporary literary genres/texts (-->List 1) and of all contemporary authors ( -->List 2) which are - contrary to earlier times - fully available Online nowadays.
I have not yet met (in Germany) an academic Shakespeare-Expert (let alone an Authorship-Expert) who unites a profound knowledge of at least 5-10 percent of this (Need-To-Know) information .-