Hoi Hai Soi Jo Ram Rachi Raakha| Ko Kari Tarak Bardavahin Sakha||
As we understand it (It is not the translation but our understanding about the chaupai) :-
Except hardwork, there is nothing in human hand. Supreme Lord wish to tell you this. Most probably you may have to do lot of labor which may not give you even half of your expected result. Do not forget GOD, for any moment, He is testing your faith and just leave the result of your work on god, which he will not give it to you.