I think the key here is to have long-term goals. I am trying to at least roughly understand where I wanna be in future (1, 5, 10 years) in terms of my skillset, abilities and knowledge. Then topics I learn should be aligned with those goals. There are definitely too much interesting things, but before I jump into something new I ask if it really helps me to get where I want to be in the future.<p>There are sometimes exceptions to this, when I just want to learn something for fun, do it as a recreational activity.