If you want spiritual life you have to pay the price. The price is the four regulative principles.
As you develop your love for Krishna he will inspire you to do things. When you become an instrument in Krishna’s hands, there is no way of knowing how much Krishna will do through you.
To recognize that He is the Supreme, we have to develop our mentality and that is why worshipping him is necessary because we are preparing our mentality to accept Him.
One becomes a devotee not by knowledge, but only by the mercy of a devotee.