$Apple(AAPL.US) is the stock I've traded most correctly, yet it's the one I care about the least. I rarely add to my position when it's halfway up the mountain; I basically bought at the relative bottom. In contrast, with Tesla, I watch it every day, want to trade it every day, but end up making a mess of my trades. Watching more and moving less isn't enough; you have to watch less and move less to trade most rationally.