Do not underestimate the power of one brief moment. We are programmed to think we need to spend months or years to learn something because of compulsory school learning and structure. Yet it only takes a single moment to change your knowledge, perspective and actions.
For example you might be working on a project and doing it the usual way. Then you get one insight from a senior who completely changes the way you design and execute. Or it could be an idea that popped into your head that was inspired by a single scene or line from a book.
Executing can take a long time. However changes in perspective happen in an instant. Do not make the mistake of prioritising a learning course just because it is longer.