Riding them into obvlivion only happened to me a few times. My biggest problem is getting a little profit, getting antsy, and selling way too early. I do it way too much. I'm posting this as a way to remind myself to hang on to what I *know* is more valuable than what it's currently trading at.
I don't know who came up with the saying, maybe I did, but I wish I could live it as much as I think it:
"Evaluate a stock, come up with a price you think it's worth; then wait for the market to agree with you."
In every case I posted, I knew it was worth at least that or more, but I sold way under what I thought it worth, because I started trading to a different philosophy, didn't follow through with the same principles I bought the stock on. I'll learn one day. Hopefully, I'll still have something left. LOL