Persistence in solving complex puzzles can serve you well as an internist.In this part of the essay, make connections between general talents and your chosen specialty.
Not every med school student will have equal interest in, let alone talent for, every specialty.
You can definitely write more or less, but writing less may show you are not dedicated enough, while writing may show you are inconsiderate.
A personal statement has to convey a powerful message about your capability, ability, and maturity.
What about you makes this specialty the right match for your personality and goals?
Help the selectors see that you have what it takes to thrive in the specialty.