The file WillBeLucky.pdf contains the article "You will be lucky (enough) to break even" that will appear in "From Quirky Case to Representing Space: Papers in Honor of Annie Zaenen, edited by Tracy King and Valeria de Paiva. CSLI publications. It will appear in the Fall of 2012. This article examines the idiomatic uses of the construction "be lucky to X" as in "you will be lucky to break even". The sentence suggests that the complement clause, "you will break even", most likely will turn out to be false. This sense is idiomatic in that it is limited to the future tense with "will". In all other tenses "be lucky to X" is a two-way implicative construction of the same type as "manage to X". That is, "you were lucky to break even" entails that you broke even, "you almost were lucky to break even" entails that you did not break even. The idiom "will be lucky to X" is brittle in that it can be ruled out by the context and by slight modifications as in "you will be lucky enough to break even". Replacing "lucky" by "lucky enough" forces the literal, non-idiomatic interpretation, that is, you will break even. We expose some of the many conditions, both linguistic and contextual, that block the idiomatic reading of "will be lucky to X" and discuss the implications of these findings for other complement constructions.