There is no mantra as powerful as Sri Radha's name

 Source : Global Organisation for Divinity

Sri Mohanchanda Ji

मन्त्र सिरोमनि राधा नाम ।

पढ़ि पावै वृन्दावन धाम ॥

वशीकरण या सम नहिं कोई।

कमल नैन जाके वस होई ॥

The crest jewel of all mantras is the holy name "Sri Radha". By chanting it, one attains the divine abode of Sri Vrindavan. There is no mantra as powerful as Sri Radha's name, for by chanting it, the lotus-eyed Sri Krishna comes under one's control.

Chant the Mahamantra Nama kirtan :

Hare Rama Hare Rama Rama Rama Hare Hare
Hare Krishna Hare Krishna Krishna Krishna Hare Hare

https://namadwaar.org/