Life long learning

I watched an interesting tutorial recently about life long learning. Now, I'm supposed to think about what will be easiest or hardest.
Hardest would be finding someone else to teach. Because first I have to convince them it is neat or cool or will help them. To say nothing of convincing them they can actually learn it!
Easiest......., I have to say that nothing jumps outs being easier than anything else. I'll have to think about that one.