Bhagavad Gita 2.41

व्यवसायात्मिका बुद्धिरेकेह कुरुनन्दन।बहुशाखा ह्यनन्ताश्च बुद्धयोऽव्यवसायिनाम्॥

vyavasāyātmikā buddhirekeha kurunandana |bahuśākhā hyanantāśca buddhayo'vyavasāyinām ||

Here, O joy of the Kurus, there is only one single-pointed determination; many-branched and endless are the thoughts of the indecisive.

By its means, the straying intellect becomes steadied in contemplating one object only; whereas the minds of the irresolute stray into innumerable bypaths.

Our plain-language meaning of this verse is waiting for scholar review.