Learning is different from being informed. Deep learning is the kind you don’t forget. And the reason is simple: you remember what you identify with.
Learning better implies a process of identification with the knowledge you learn. It’s a challenge when you need to know something because it’s part of the course curricula or part of the job, but you’re not interested in.
I don’t have a solution to this problem but suggest a mindset change.
What you have to learn now is part of you and shapes the person you become, even if you forget it.
Learning is a process rooted in the present moment but with profound implications in future moments.
What seems an obstacle today may reveal to be a trampoline tomorrow.
If you trust the learning process, you also learn to master the knowledge identification skill and move beyond what interests you, and makes who you are, toward what shapes you into who you can become.