Michael Saylor is talking about his book, Shark Tank judge Kevin O'Leary said about the entrepreneur's Bitcoin advocacy.

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Shark Tank investor Kevin O'Leary, in a recent video on his Instagram, pointed out that entrepreneurs often find solace and comfort when their products are a hit among their family members.

Shark Tank star and investor Kevin O'Leary recently shared some advice on how to acquire customers and why family members did not qualify as potential buyers.