More businesses die of indigestion than starvation.

David Packard (1912–1996) American electrical engineer, businessman, government official
(Misattributed)

The quote is frequently attributed to Packard, but actually he (anonymously) quoted in his book, The HP Way: How Bill Hewlett and I Built Our Company (1995): "Wells Fargo sent a retired engineer to visit us. I spent a full afternoon with him and I have remembered ever since some advice he gave me. He said that more businesses die of indigestion than starvation. I have observed the truth of that advice many times since then."

Variants of the saying include "entrepreneurs," "companies," and "start-ups" in place of "businesses." See here for more information.