It is very important to understand that there are many varieties of worship directed toward Sri Krishna and depending on the devotee's desire he will get a certain type of result.
In this regard Sriman Bhaktivinod Thakur mentions in his book Jaiva Dharma; "When one worships Krishna through the path of karma, the mind is purified, and one may obtain material fruits, freedom from disease, or liberation. But the same worship of Krishna through the path of bhakti produces only prema for krishna-nama. When karmis (those who follow the path of karma) observe Ekadasi, it eradicates their sins; whereas when bhaktas observe Ekadasi, it enhances their hari-bhakti. Just see what a world of difference there is!
The difference between sadhana performed as an aspect of karma, and sadhana performed as an aspect of bhakti is clear, but it is very subtle and only one who has Bhagavan’s mercy may know it. The bhaktas obtain the primary result, whereas the karmis are caught up in the secondary results, which may be broadly divided into two categories, namely, bhukti (material sense enjoyment) and mukti (liberation)".
Sri Krishna mentions this to his long time friend Arjuna;
" As they approach me I reward them accordingly"
"To those who are constantly devoted to serving Me with love, I give the understanding by which they can come to Me"
"To show them special mercy, I, dwelling in their hearts, destroy with the shining lamp of knowledge the darkness born of ignorance"
"My dear Arjuna, only by undivided devotional service can I be understood as I am, standing before you, and can thus be seen directly. Only in this way can you enter into the mysteries of My understanding"
In conclusion, pure devotion is not about ourselves, it is aboutpleasing the transcendental senses of the all attractive lord Sri Krishna and his Associates. Serving his holy abode and blissfully glorifying him via his Holy name.