In business (and in life), nothing ever stays the same.
You're either expanding and growing or contracting and declining.
Many business owners get to a point where they say "I think I've made it. I don't want (or need) to do anything else."
As your business grows, there will always be new walls, hurdles and challenges to break through.
Yes, certain things will get easier but never get complacent...that's the start of a slow death.
Just ask Toys R Us, Blockbuster, Sears and Kodak.