Which stage of retirement involves retirees coming to grips with the realities of retirement and feeling fulfilled with the new phase of life?

Retirement routine.

Explanation:

Retirement is one of the most important stage of life and explained well in psychology. This may be considered as the last changing state of the life. Retirement is divided into six different stages.

The retirement routine is the last stage included in the retirement. The individual well knows about all the true facts of life and ready to face the truth whether it will be beneficial or harmful for the individual. The individual is ready to live the life with the new phase.

Thus, the answer is retirement routine.

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