We must become strongly established in the holy name, Naam Sankirtana is the only thing which goes back with us and it is possible till the end of our last breath.
When love increases for the holy name, for Krishna, then automatically our hesitation of dancing and chanting ends. As chanting the holy name and dancing on the holy name are not different from Krishna.
When one’s heart is purified by the association of devotees and by the avoidance of the offenses committed when chanting and worshiping the Lord; the transcendental name, form and activities of the Lord are revealed by the Lord.
We cannot realize the presence of Krishna while chanting the holy names, only because our chanting is not at the level of ‘shuddha nama’ i.e. offense less chanting.