We have to filter information, all the time, or we'd be overloaded with irrelevant detail. There are always things to learn. So much to learn, and a limited amount of time. Schedule your search for new things to learn about, daily. Spend time searching for new things to learn about, systematically.
Internal signals are useful, too.
Especially when you are SURE it can't be true, worthwhile, or even possible. Search internally for what prevents or slows learning down. Search out experts you'd usually ignore. If you normally stick to conventional information about conventional medicine, learn about alternative approaches to healing. If you normally stick to alternative sources, learn about conventional sources.