Woodshed - A slang term (also referred to as 'Shedding') which refers to an intense period of practice and self-development that a musician has (or is believed to have) undergone. If a musician has dramatically improved their technique in a short period, a critic may state that the performer has "woodshedded" on technique.

I think it’s important to not only go through a period as described above, but, whenever possible, to take further periods of such focus and dedication. To not worry about submissions. To not allow distractions. To focus as much as you are able on improving your craft.