rush (someone's) fences

Translations
делать что-то поспешно, без подготовки
He tends to rush his fences without considering the consequences.
Он склонен действовать поспешно, не рассматривая последствия.
Definitions
To act hastily or prematurely in a situation, especially by confronting challenges or obstacles before being fully prepared. The phrase originates from horse riding, where 'rushing fences' means a horse approaches jumps too quickly, often leading to mistakes.
Words
fence

noun
забор
rush

verb
спешить