The highest is the Vaishnava. Ideal vaishnava means he is a parama-hamsa. That means he is not envious from anybody. He is always thinking how to take others back to Godhead.
One should go for parikrama, because in parikrama, everything is there. Shravanam, kirtanam, smaranam, so that we can easily develop attachment for Krishna.
Purity of consciousness depends upon purity of mind. Purity of mind depends on purity of actions. How you eat, sleep and whom you associate with matters a lot.
If we chant and hear enthusiastically, then memory will come.