I got a good answer for you, but it's long winded. It all started with the first chemical self-replicator. These replicators consume and compete for resources s

I got a good answer for you, but it's long winded. It all started with the first chemical self-replicator. These replicators consume and compete for resources so they evolve. The will to survive is encoded in their reward systems, their senses and body is adapted to their niche, they all come from evolution. Humans have these basic instincts as well, and we don't need anyone to prompt us, we already got an in-built goal. AIs so far have been created at the will of humans, but the same instincts can emerge if AI can be a self replicator.