Internalization/ɪnˌtɜːrnələˈzeɪʃn/ Definition 1 of 3Pro Tip 1/3Personal Change Refers to making outside ideas part of your personal beliefs or habits. Her internalization of punctuality made her never late again. Pro Tip 2/3Emotional Depth Can imply a deep emotional connection with the adopted beliefs or opinions. He felt peace after the internalization of mindfulness practices. Pro Tip 3/3Mentor Influence Often used when someone learns and adopts behaviors from a mentor or role model. Her internalization of her coach's advice improved her performance.