The moment you stop advancing and developing yourself; the moment you stop growing is the moment you stop living. Life is about continued growth.
The Israelites had received their inheritance and yet 7 tribes remained not just without their inheritance but also within their comfort zone. In Joshua 18, Joshua rebukes them and instructs them to start in pursuit of receiving their inheritance.
Their inheritance was theirs to receive and ready for their receipt and yet they simply had taken no initiative to receive it. Ever felt that God continues to wait upon us to do our part before He reveals to us the blessing that has been there for us?
They had to step out of their comfort zone and do their part before enjoying the blessing of their inheritance.