What do we mean by "Complete preparation" ?

Complete: There may be different definitions according to change of subject.

A plan or task is said to be complete if it's percentage of success from all projection is complete. if a plan completes, all criteria of it's success then it said to be a complete or successful plan. 

For an instance,

Building plan of a house complete following points then it is said a complete plan:

• Govt. permission.
• Map or Building plan for construction.
• Money for construction.
• Society and environment.
• Required land.
• Building material.
• Contractor.
• Method of construction.
• Workman ship.etc.

If any of the point gets weak then the building thus constructed will demolish before time. In the same manner, If a plan of Career lacks any crucial point would cause damage to fixed aim. Therefore, We should Discuss in our mind and relate with our success percentage, we can find where we lack and how we can cure the problem. 

On the other hand, Definition of complete thing is that which done all work for the reason it is made as man is a machine if it could not done the work it is made for or wouldn't live as he was instructed. Then he will be called as an incomplete machine.