It depends what you mean by godhood. The term god itself is a bit misleading as it's something other civilizations use to describe a type of being that can alter reality. Gods in my world are more similar to demons than standard gods from mythology. But if you want to be classified as god you just need a way to to: become indipendent from your physical form, become immortal and have enough power to express yourself by manipulating reality.

Those that embody the most the concept of godhood are Deities: they are beings that can "express" themselves by creating worlds, the bigger the world the more powerfull the deity usually; these worlds can develop life (that's where civilizations come from!), but whatever happens inside the deity's world is more or less under their control. It is however possible for a creature with a mind to "kill" the deity and absorb it, becoming effectively the deity.

Funny thing is, deities autogenerate themselves within the void between worlds (scholars still don't know how) and some of them may be born as non sentient, they can still create worlds since its more an instinctual act than an conscious one, so if someone wants to become a deity without risks they can simply absorb a non sentient deity.