As I continue to advocate for long-term investors and all not-so-nimble traders to take profits, realize losses and all together avoid Apple ( AAPL), I receive pushback from a significant segment of the crowd. I'm not so much surprised by this as I am terrified. Terrified with what appears to be an incredible lack of discipline on unabashed display from retail investors and AAPL longs. Over the weekend, I posted a series of Tweets about AAPL as an investment and long-term investing in general. I think I did this while killing time at the Toyota dealership where, yes, I broke my 13-year streak of not owning a car. I bought a Prius! More on that, including video from the vehicle itself, later this week. But, anyway, here are the Tweets. Please read them from the bottom: Plenty of people hit back hard on what I have always considered Investing 101-type stuff. Most folks argued that now is absolutely not the time to sell AAPL. They contend that you buy when fear and blood occupy the streets. This is the time to load up and follow your sane, logical and long-term conviction on the stock. That's one way to look at it. In some instances, it might make sense. But not here. At least not right now. Just scroll through my recent article history. You'll find plenty of work that focuses squarely on Apple, making the clear and direct case that long-term investors should not be in this stock. That means, don't buy it and, if you own it, take profits or losses immediately. In this article, I consider this idea from the broad perspective. AAPL -- or any other stock you find yourself in this situation with (you know, down $250 from its high in a matter of months with the world now seemingly against it) -- could go up tomorrow, vindicating bulls. If that happens, people who sell now will lament that they took a loss and missed out on profits or cashed out their profits too soon ultimately leaving money on the table. That's typical. However, it's the type of psychological reaction investors need to push back on.