I agreed with the second part of your comment and I know what you mean. I've worked in extremely competitive / aggressive environments and I got a serious buzz

I agreed with the second part of your comment and I know what you mean. I've worked in extremely competitive / aggressive environments and I got a serious buzz from it. If you can channel that aggressiveness and competitiveness outward (without pissing off the market), then it's much more productive. It's also all too easy to let it cause damage internally.