The central message of this sermon is that celebration, whether personal or collective, requires intentionality and effort. The speaker argues that simply having good things happen in life, such as a good marriage or material prosperity, does not automatically lead to celebration. Rather, celebration requires a purpose, planning, and cooperation with God's work in one's life. This message advances the belief that Christian living is not passive, but rather an active response to God's gracious initiatives, requiring effort and dedication from believers. The takeaway the speaker wants listeners to understand is that celebration is not something that just happens, but rather it requires a deliberate decision to seek joy and purpose in one's life, and to cooperate with God's work in doing so.