Follow all safety and job requirements. Meet deadlines. Learned tons about earthworks and went on to be foreman of a crew. Management good all considering there was a pretty big language barrier.
The hardest part of the job probably being the fact there is not much time to have a life when a project starts.
The most enjoyable part of the job being outdoors, enjoying the sunshine, seeing gorgeous sunrises and yes sometimes sunsets. Mostly not having to be stuck in one spot and punching a time clock!