Ask HN: How Do You Learn Without a Goal in Mind?

Basically, I'm looking to learn more programming languages and JavaScript frameworks, mostly to keep up with current trends and to stay on top of what's happening in the industry.

Problem is, I'm very much the kind of learner who finds it difficult to do anything unless I have an actual goal in mind to work towards. I learnt programming to begin with because I wanted to code certain things with it (mostly websites and apps for things I was interested in), and pretty much learnt everything else in life for similar reasons.

As a result, the idea of just doing something for the heck of it, or worse following a tutorial to make a todo list app feels utterly pointless to me.

So how do you motivate yourself to learn more in this situation? How do people learn if they don't have anything new they're dying to build/work on?