How can I master the mind!

Only way out is to work through your own experiences. Logically thinking can help. constant practice.

Ultimately you need to work with reality.

Vipassana can be an integral part. I can do atleast one session per month. mostly serving, even more.

There are people who transcended this, micheal singher and don megiuel but also tenzin palmo. You can constantly listen to them and practice based on their knowledge and understanding.

Also things like bhagwat gita and astavakra, thinking fast and slow, throtal all other knowledge.

What you need is basically a starting point. and then move forward with it.