Believe it or not, I am a URM from a lower-middle class single-parent home and I am also having trouble with this topic.
Obviously, life hasn't been perfect but I can't think of a time that I faced a really big challenge. My mindset is such that after something has passed or I've overcome some obstacle, it doesn't seem that difficult in hindsight. Likewise there are the more personal/social challenges but I don't know how appropriate those are to write about. Then there's the whole balancing ECs and school work, etc. that everyone has...