The true cost of moving my stop on $AAPL last year

I've been trading for a while, and you'd think the basics would be second nature, but last year I got burned pretty badly moving my stop on $AAPL. I had a decent long position from $145, feeling good as it pushed towards $170. My original stop was tight, around $149, which was a clear break of a trendline. As it started to consolidate and pull back, I reasoned that the move wasn't over, just a pause, and I mentally moved my stop lower, then lower again, convinced it would bounce. The eventual drop took me out at $142, well below my original intended risk, turning a good paper profit into a real loss and tying up capital for weeks. The lesson, again, was crystal clear: establish your risk before entry and stick to it, no emotional re-evaluation mid-trade. That's capital preservation 101, and I broke it.