Do you think it is possible to change a major characteristic of your personality? is it really possible to become more enthusastic?

In the excerpt of puck’s speech shown here, how many couplets do you see? if we shadows have offended, think but this, and all is mended, that you have but slumber'd here while these visions did appear. and this weak and idle theme, no more yielding but a dream,

How do i can change this sentence : a modern physician in a small town not only is proficient in general medicine but surgery as well. to parallel structure?

Hyperbole in the book messenger by lois lowry