"Begin - to begin is half the work, let half still remain; again begin this, and thou wilt have finished"

The quote suggests that starting a task is the hardest part, once you begin, completing it ends up being easier. If you break down the job into smaller sized parts and begin with the very first half, then you can encourage yourself to continue and complete the rest. Ultimately, the quote is highlighting the importance of doing something about it and not being discouraged by a complicated task.