Bhagvad Gita is a conversation between Consciousness (Krishn) & Jiva (Arjun). The following verse spoken by Krishn talks about bhakti with mind.
[Bhagvad Gita, Chapter 8, Verse 14]
The above implies that whosoever always and constantly thinks about Self with undivided mind, to that Yogi ever absorbed in Self, the Self is easily attainable.
Bhakti does not necessarily mean following certain ritual. There is no pointing chanting AUM a thousand times just for the sake of doing it. There is no point in just watching breath or dissolving in meditation samadhi or having epiphany if Self Inquiry is not made to find out the seer. Many people even after NDE (near death experience) are unable to know that they are pure Consciousness because they get immersed in the amazing experience of unconditional love etc. and do not do Self Inquiry. It does mean something useful if chanting AUM brings mind back to think about the Self. Self inquiry is the direct method of Self Realisation which involves doing no ritual whatsoever. A seeker always needs to inquire, “Who is the seer?” or, “How do I know what I know?” or “Who am I really?” and engage in negation.
Kabir says, “Kar ka manka dari de, man ka manka pher” which means drop the beads of rosary and rotate the beads of mind.
PS: Some rituals can be useful if their symbolisms are understood. For example, every time you apply bindi or tilak remember that your final goal is Self Realisation and apply the mind to Self Inquiry.