How to do mind management according to Bhagavad Gita?

Thanks for asking this question.
The teachings of Bhagavad Gita are certainly very helpful to regulate the mind’s activities.
One needs to devote some time everyday by serving, reading about Lord Krishna’s glorious acts, chanting His Holy names (Hare Krishna Mahamantra).
This helps to perform other duties in a balanced way.
It is a matter of practice, which Lord Krishna recommends to Arjuna in BG 6.35
By constant practice and detachment, one can regulate the mind.
In this way one can do mind management.