You have to have a clear definition of your goal – what do I want? What am I heading for? You have to have a very clear definition of what is Bhakti. If you are not clear, then you can remain in a hazy field for a long time. That is the significance of Nyaya. It gives clear definitions, which is very important. Otherwise you may think that this is the definition of Bhakti and I am doing Bhakti, but what you may be doing may not fit the definition.