thebigone is absolutely right.
First of all, they should get a english training before coming to US otherwise US is like a alien planet where nobody understand you.
Most of the nepaese i have talked and met so far who won the DV lottery are very stubborn and think they can win the American with their talk and skill which they had back in the country.
If you want to live in America then you have to act like a american which means get a education/training from here, Work hard to get the education.
------Education, Education & Education----That is how you live in America