All things are easy to industry, all things difficult to sloth.
Franklin contrasts industry, meaning steady and purposeful effort, with sloth, or habitual inactivity. His point is not that diligent people literally find every task easy, but that regular effort makes difficulties more manageable. Work begun promptly can be divided into smaller steps, skills improve through practice, and problems are less likely to accumulate.
Sloth has the opposite effect. Avoiding a task can allow it to grow more urgent or complicated, while lack of practice can make the eventual work feel harder than it might otherwise have been. The saying therefore presents diligence as a practical habit rather than simply a moral virtue. Franklin’s contrast suggests that difficulty is shaped partly by how a person approaches responsibility: sustained effort tends to reduce obstacles over time, whereas delay and inactivity can increase them.