Instruction

In the Protestant world, particularly within Calvinism, the standard approach is to learn as much as you can.  It is a very academic world, built around knowledge and understanding.
But the historic Orthodox world is quite different.  This is not to say that Orthodoxy is anti-intellectual, far from it.  The historic church contains some very brilliant minds.  In Orthodoxy, the emphasis/goal is theosis. In short, we are to become a much like God as is humanly possible. So this means we must strive after purity and holiness.
With that in mind, the idea of obedience comes to mind.  Two things here: The Orthodox faith is very organic and we do not lose our individuality when we become part of the church.
Very high on our list of things to seek, is a spiritual father.  This is someone who has been a faithful, mature Christian for a long time and has much wisdom.  When we find that spiritual father, his wisdom and instruction is for us. We cannot, safely, take the specific instruction from another father and apply it to ourselves, indiscriminately.  Specific wisdom is for specific people at specific times.
In short, we no longer live under law, by which we follow a set of rules.  We are now under grace, filled with the Holy Spirit. God has given us godly examples we are to emulate and learn from.
Find a spiritual father and learn to obey.