Association is very important. It acts just like a crystal stone, which will reflect anything which is put before it.
Nectar of Devotion, Chapter 12,
Elevation is possible in Krishna Consciousness in the association of pure devotees who can deliver one from delusion.
Association of saintly persons alone can bring us eternal peace and everlasting happiness and carry us across the ocean of birth, old age, disease and death.
When we keep our association with Krishna, every activity is proper and liberating, but if we disassociate ourselves from the Lord's mercy then like a hand which is severed from the body we become ugly and useless. — In his letter to Hrisikesa, 26th Nov, 1968.
For Financial gain you need finance experts, similarly, For Spiritual gain you need association of devotee.