Around four years ago when my son was born I realized I was going to suddenly have a lot more expenses and I re-evaluated my collecting interests. I had been trying to buy one of everything - and when you're into world coins, there's an awful lot out there. I decided I didn't want to do that anymore, and when my mindset changed I suddenly decided I could part with a lot of the coins I had, so I started selling a lot of them. Since then I decided I didn't want to spend any "new" money on coins. I keep the money I get from selling coins in a separate account and I only use that to buy new coins. However, an interesting side effect of this is I like to see the number in that account grow because it feels like an accomplishment to be making money selling coins. That means I'm hesitant to spend it, so I just don't buy a lot of coins anymore. It's still available if I really want to spend it, but I just make sure I really want something first. It hurts to see that number shrink when I've been working so hard to grow it.