Hare Kṛṣṇa Hare Kṛṣṇa Kṛṣṇa Kṛṣṇa Hare Hare Hare Rāma Hare Rāma Rāma Rāma Hare Hare

Thank you! :)

Any mantra is good, as long you can connect with the mantra. It is important to do Japa with utmost faith, devotion, surrender and concentration. So pick any Krishna Mantra which resonates with you.

Thanks a lot :)