The nursing process is a systematic, critical thinking method used by nurses to plan and provide individualized care. It consists of five phases - assessment, diagnosis, planning, implementation, and evaluation. In assessment, nurses collect client data through various methods. They then use the data to establish nursing diagnoses, which are clinical judgments about actual or potential health problems. During planning, nurses prioritize problems, set goals, and select interventions. They implement the plan by providing care. Finally, evaluation determines if goals were met and the effectiveness of the plan.