How to Become Attached to Krishna?

Beg this Benediction from Someone Who is Attached to Krishna

You have realized very wonderfully that you must now become attached to Krishna. Krishna does not bestow such feelings of attachment very easily upon the fallen, conditioned souls because He becomes under the control of those who are attached to Him. If you want to receive this supreme benedictions of all benedictions, you must sincerely beg Krishna for it and continue doing so until He finally answers your prayers.

The following verse describes the state you need to attain:

satam ayam sara-bhrtam nisargo
yad-artha-vani-sruti-cetasam api
prati-ksanam navya-vad acyutasya yat
striya vitanam iva sadhu varta

"Paramahamsas, devotees who have accepted the essence of life, are attached to Krishna in the core of their hearts, and He is the aim of their lives. It is their nature to talk only of Krishna at every moment, as if such topics were newer and newer. They are attached to such topics, just as materialists are attached to topics of women and sex." SB 10.13.2

The insider's secret for awakening your dormant Krishna bhakti is the get the mercy of a person who has already awakened his dormant love for Krishna. This is described as follows by Srila Bhaktivinode Thakur in the concluding lines of his song, "Ohe! Vaisnava Thakura":

krsna se tomara, krsna dite paro,
tomara sakati ache
ami to' kangala, 'krsna' 'krsna' boli',
dhai tava pache pache

"Krishna is yours; you have the power to give Him to me. I am simply running behind you shouting, 'Krishna! Krishna!'"