Bageshwar Dham Sarkar
What is bhav (feeling) and how do I know if my feeling is good or bad?
Bhav is a change in the state of mind
Bhav is the change in your state of mind, like the mind turning glad at a sweet scent and sour at a bad smell. When you feel 'these are my own and God is in them', bhav has appeared; when you feel God is nowhere, kubhav, a bad feeling, has appeared.
Seeing the situation and feeling 'these are our own, God is in them too', once that is settled, know that bhav has appeared; and when it feels that God is nowhere, know that kubhav, a bad feeling, has appeared.