Different people and cultures believe different things for the answer to this question. The meaning of life as we perceive it is derived from philosophical and religious contemplation of, and scientific inquiries about existence, social ties, consciousness, and happiness.
A long-term financial plan should include these elements. Time Horizon. A plan should look at least  five to ten years into the future. Scope. A plan should consider all appropriated funds, but especially those funds that are used to account for the issues of top concern to elected officials and the community. Frequency.
How much: Some financial planners say you need enough insurance to replace five to seven years of your salary. If you have young children or significant debt, you should bump up your coverage so you have enough to replace as much as 10 years of your salary, they say.