These stocks are built for the long run.

What's one of the biggest mistakes investors make? Selling stocks too soon. It's smarter to try to adhere to Warren Buffett's favorite holding period of "forever," or at least as close to that goal as practically possible.

Three Motley Fool contributors believe they've found healthcare stocks that you can buy and hold forever. Here's why they chose AbbVie ( ABBV -0.21% ) , Eli Lilly ( LLY -2.24% ) , and Johnson & Johnson ( JNJ -0.31% ) .

A survivor and thriver

Keith Speights (AbbVie): Not too long ago, AbbVie's outlook probably seemed precarious to outside observers. The company's top-selling product, Humira, faced the loss of patent exclusivity. Investors braced for a steep sales decline for the blockbuster drug ,

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