There are many skills that are of vital importance for landmen, but none so much as dependability. Luckily, by improving some of these other areas (managing time well, communicating effectively, and resolving problems), you will also be well on your way to becoming more reliable. To that list, I would also add that it is absolutely imperative to be honest and accountable for your work. Someone who can consistently be counted on to do what they say they are going to do is worth their weight in gold to their client or employer. By being dependable, you will become unexpendable.