Sentence 5 mentions 'this small change in perspective,' prompting the identification of the sentence containing a change in perspective. Sentence 2 fulfills this criterion as it involves speaking about oneself in the third person, constituting a change in perspective. Therefore, 2 and 5 form a complementary pair.
Sentence 4 introduces the concept of rumination, and sentence 3 states that individuals prone to rumination are at risk of depression. Hence, there should be an alternative to rumination. Sentence 2 presents that alternative with 'illessim,' and its benefits are elaborated in sentence 5. Thus, the correct sequence is 4325, and there is no place for sentence 1 in this paragraph.