I'm not on my personal computer so I don't have my letter in front of me and wrote it months ago, but this is what I remember:

-I'm so and so.
-My parents are so and so
-Need this because it weighs heavily on my family
-My mom is medically depressed and sick
-My dad also has medical issues
- How I help my parents (help them set up stuff like payments, keep an eye on finances)
- He's the sole income earner and retiring in a couple of years (so I should start making money so I can help them out)
- Sending me back would cause them hardship cause I wouldn't be able to earn money and they would have to support me (ties to the following)
-Talk about how much of a shithole country Venezuela is (no food, no jobs, corruption, one of the most dangerous countries in the world, blah, blah, blah)
- More mental anguish cause I'd be sent back to Venezuela.
-Reiterate yet again how much my parents would suffer
- I'm an alright person.
-Give my parents some peace.
The end.

You can turn anything into a hardship, you just have to look at it from a different perspective. For example, my dad makes bank but he is indeed retiring in a couple of years, and won't be making the same amount of money, since this could change my parents' lifestyle, I gotta be around to help them out.

I do have to say that the big helpers in my case are my mom's health and the fact that I was born in Venezuela.

I've seen people use BUNION surgery as a hardship (and be approved), so as long as you make a compelling case and write it well you can talk about anything you want.