If you look at the life of great devotees like Hanuma and Gopikas etc, you will understand that your statement (Since All is God) is incorrect. Not every soul is God. If every soul is God, then the word Service becomes meaningless. Only some special souls like Krishna, Jesus, Mohammed etc are charged by unimagibable God and they are considered as Human Incarnations. Ofcourse every soul has a good chance to become God, and this can only be achieved by Selfless Sacrifice of work and fruit of work(not aspiring anything in return) to alive Human Incarnation or atleast to great devoted souls. Other than this by meditation or other physical techniques on cant become God.
The problem here is, we think we are God already and its just a matter of time and some effort to recognise God inside us through some efforts(meditation etc) which is utter nonsense.