Translation of "Desperation" in Japanese

In a few seconds I would have overcome the desperation threshold.

後数秒で私は絶望の分岐点を越えるのだ。

To tell the truth, she gave away all her money to others in desperation.

実のところ、彼女はやけになって、有り金をみんな人にやってしまったのだ。

We arrived at that plan out of pure desperation, but the book sold well.

苦肉の策で企画したんですが、その本はよく売れました。