In another lecture, given in 1973, Prabhupāda’s says, “If a devotee can’t serve to his full capacity, even though he wants to serve, Kṛṣṇa accepts that ‘wanting to serve” as a service! And his life becomes successful.” In another words even if there are obstacles to service, but if we want to serve, then Kṛṣṇa accepts that desire of ‘wanting to serve’ as service.
MKV, Vol 8- Pg 42, Chanting with Feeling- January 17, 2014 -Baltic Festival