I'm trying to pursue spiritual knowledge, but I'm very focused on my family and career. How does Chapter 50 say this might affect my progress?

Chapter 50 directly addresses this situation. It states that a person whose mind is constantly fixed on wealth, luxury, and thinking of their wife and sons, is considered to have knowledge that is merely a form of ignorance, even if they are otherwise 'wise'. The text explains that such a person, being deluded by these attachments, does not know their own true welfare. It suggests that as long as a person is without devotion, their pursuit of knowledge will be covered by this layer of ignorance stemming from worldly concerns. Therefore, your focus on family and career, while normal, is seen as a potential obstacle that covers true knowledge.