A mock portfolio isn't a bad idea. Good habit to get into, though, which seems to be omitted by a lot of chatterers; track your performance. If you start with a hypothetical $100K and it goes to $105K, you're up 5%. You might learn more by figuring out your individual positions, and where /how you did well-- or not. But don't get so hung up on those you forget to measure your skill. People tend to look at the crumbs and assume the whole loaf is doing great.