I wonder sometimes if people still do jump in without a plan, but every time I read about how tough it is to decide, I guess the answer is yeah, people still come in here without thinking ahead.

1. If you're a speculator, you have your targets. And you have your loss estimates. So you don't decide on the spot, you let the market decide for you.
2. If you're a holder, you also have targets - price or duration. Anything else in between that is irrelevant.

Greed, even if we view it as good, should still mean you can take profits at your targets. I'm greedy for the long game, so missing out at 20k's fine by me.