You can't run as much as we have and stay this high without perfect forecasts.

United Airlines (UAL) - Get Report violated those rules.

So did Texas Instruments (TXN) - Get Report .

And then a bunch of negative Apple (AAPL) - Get Report analysts warned of sharp short falls in Apple Xs and this is what you get.

Is it right? Let's put it this way: stocks can go down. They actually lose altitude and go lower. Even the best ones. So what do you do?

My take is that no one ever got hurt taking a profit but at the same time there have been plenty of people waiting for a pullback so when you get one you shouldn't say, "nope, this isn't the pullback I have been waiting for. I want an ever bigger pullback."

To which I say that's absolutely fine. Stocks aren't for everyone. Oh, and let's remember, no one ever wants in when stocks are going down. They want in when stocks are going higher. Always worth remembering that you don't have to do anything big. Stocks have run up a lot.

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We've made some small sales for Action Alerts PLUS selling stocks we don't care that much for so we are ready when stocks come down.

We can't now say, "Uh oh they are really coming down after being up a lot. Count me out." Best to say, "Cut me in for some and then let's see what happens."

Apple is a holding in Jim Cramer'sAction Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells AAPL?Learn more now.

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Action Alerts PLUS, which Cramer co-manages as a charitable trust, is long AAPL.