Your search for "The surest way to fail is not to determine to succeed. - Richard Sheridan 1751 - 1816" revealed the following:

Those that vow the most are the least sincere. - Richard Sheridan 1751 - 1816 - RW-23.3

Those that vow the most are the least sincere. - Richard Sheridan 1751 - 1816 - Drink Wisely in MugWisdom - Ceramic 11oz cup

By failing to prepare, you are preparing to fail. - Benjamin Franklin 1706 - 1790 - Pretty Witty Mousepads Stop2Think

RW-7.1 - By failing to prepare, you are preparing to fail. - Benjamin Franklin 1706 - 1790

The surest test of discipline is its absence. - Clara Barton 1821 - 1912 - RW-20.6

YT-7.1- By failing to prepare, you are preparing to fail. - Benjamin Franklin 1706 - 1790