Equilibrium : Elements and bodies

["newbieonekenhobby" <newbieonekenhobby@...>]

I'd like to know whether we should tend to an Equilibrium among our 
various bodies (mental vs. astral vs. physical) the way we do for 
the Elements ?

For example : is it possible to have too strong a mental body 
compared to the astral one, to the point of having to decrease 
its "size" ?

Or is this Equilibrium among the bodies obtained as a side effect of 
working on the Elements themselves ?

Thanks.