(someone's) reach exceeds (someone's) grasp

Translations
амбиции (кого-то) превосходят возможности (кого-то)
In his business venture, his reach exceeds his grasp, leading to several setbacks.
В его деловом предприятии амбиции превосходят возможности, что приводит к нескольким неудачам.
Definitions
This phrase means that someone is attempting or aspiring to do more than they are actually capable of achieving. It suggests that their ambitions or desires are greater than their abilities or resources.
Words
someone

pronoun
кто-то
s

article or possessive pronoun
чей-то
reach

noun
стремления
exceeds

verb
превышают
someone

pronoun
кто-то
s

article or possessive pronoun
чьи-то
grasp

noun
возможности