One thing I find very helpful which is not specific to the hobby is the command of a variety of expletives. Depending on the seriousness of the c***-*p they can be strung together so as to be more appropriate to the situation. For example a slight wobble when brush painting may only require one simple word. Whereas half a bottle of
Tamiya Extra Thin over the wing of your latest, almost complete, masterpiece will certainly need a string of said expletives. The volume of the required profanity can also vary. It can range from under the breath and barely audible to shocking the people in the house next door but one.
I strongly advise those new to the hobby to acquire a sizeable vocabulary of appropriate oaths. They will become an important part of your modelling essentials and will ensure you achieve full enjoyment from this wonderful hobby.