Lessons learned: Over-sizing a good idea

I remember a few years back, I had a really solid read on $DAX. The setup was textbook, confluence of indicators, strong macro tailwind, everything pointed to a clear move higher. My analysis was spot on, and the market moved exactly as I anticipated. Problem was, I got greedy. Instead of sticking to my usual risk per trade, I effectively doubled down, convinced this was a 'sure thing.'

The trade ended up being profitable, but the stress throughout was immense. Every tick against me felt like a gut punch, and I found myself staring at the screen for hours, unable to focus on anything else. Even though it worked out, that experience taught me a valuable lesson about position sizing. A good idea doesn't need oversized risk to prove its worth; proper sizing ensures you can execute your plan calmly, even when you're right.