"Learning and development occurs throughout a nurse's…career. Continuous Professional Development (CPD) is an important foundation of lifelong learning and helps nurses…maintain their competence to practise° (Nursing and Midwifery Board of Australia (NMBA), 2016). Describe the concept of lifelong learning and substantiate the importance of lifelong learning for the Registered Nurse in maintaining the competence to practise and in ongoing career development. Justify the use of a professional portfolio in demonstrating lifelong learning and meeting the NMBA Registration Standard for CPD.