tmux - per project, persistent terminal
shell aliases - stop typing frequently used commands
GTD - some form of productivity process like Getting Things Done, including a prioritized TODO list
hot reload - don't accept slow development cycles
timeboxing - avoid rat holing a day or two away on a low value task
programmer notebook or wiki - document steps or arcane knowledge for the next time
hard coded - unblock yourself for missing data or dependencies
user testing on paper prototypes - save months of throw away code