Hello!
The specific sentence has "they" as the subject. I'm taking this as they = outsiders, so you could restate it as: The outsiders need to overcome the temptations to try and fit in by climbing into one.
Climbing into one is climbing into a box, as addressed earlier as well. This also means climbing into what is normal, what the trend is (As referenced by the phrase think out of the box).
Therefore, put the sentence this way: Outsiders need to overcome the temptation to try and fit in by following what is normal.
Essentially - people who don't fit in need to resist trying to fit in with others and not follow what is normal.
Hope this helps!
I’m confused on you’re question
C) outline formats most easily adapted to argumentative writing
On February 12, 2019, Kelly announced that he would run as a Democrat for the 2020 United States Senate special election in Arizona. ... McSally is the presumptive Republican nominee for the 2020 election to serve the final two years of the term won by the late John McCain, who was elected in 2016 and died in 2018.