Sometimes we are conditional in our attempts to practice bhakti. We may only want to do a particular service, and if that service is not available to us, we say there is no service at all. We think if we do a service not of our choosing that we will not get credit or be recognized. We think we will not be able to maintain our enthusiasm unless our service is recognized. This is utsaha-mayi, false or immature enthusiasm.
LFD Vol 2 Pg 248, The Lord's merciful glance, 4th Paragraph