Continual Learning with Erin Orstrom
Complete Developer Podcast - A podcast by BJ Burns and Will Gant - Giovedì
You need to keep learning to continue to grow. Old technologies, frameworks, and languages will change and grow to meet new needs and add new features. New technologies are constantly being built and put out for people to use. You don't have to be up-to-date on the bleeding edge tech but should keep up with the feature set in what you are using.