Bhagavad Gita, Chapter 6, Verse 26

Through whatever reason the restless, unsteady mind wanders away, let him, curbing it from that, bring it under the subjugation of the Self alone.

The mind wandering off isn't the failure here, not bringing it back would be.

This normalizes something every practitioner experiences. A wandering mind isn't described as a problem to eliminate entirely, it's described as something to keep gently redirecting, again and again, for as long as it takes.