How do you distinguish the doctrine of religion from that which is not doctrine?

Doctrine is an amount of knowledge based on experiences and thoughts ( of it`s founders) which can guide towards other actions, thought or believes ( that may be altered by experience in one`s life) where as religion has set rules, which should not or in many religions are actually prohibited to be altered.( I could elaborate here and give you examples but it seem to me that have a computer as well:-))
Doctrine can be applied to many things (there are doctrines that are negative - meaning that not every doctrine is ok) where religion (good or bad - if there is a differentiation) only has a religious purpose (meaning how it is interpreted and acted upon within it`s religious
grounds). Doctrine doesn`t require action - religion does!
Example: Taoism, the believes of Confucius is / are thoughts and believes of this guy, though they posses a knowledge beyond normal it is very logical, understandable and practicable and doesn`t need explaining where as to religion - pick one, may need an explanation even though if read properly not much.
Doctrine suggestions usually say: " to have a good life one should......
A religious suggestions usually say: "you have to .....
where one is suggesting and the other one is kind of ordering
doctrine doesnt force you to follow as oppose to religion, even Buddhism which i believe is the most adoptable.
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