Plants, animals, insects, bacteria, viruses, algae, mold and humans all have life: they grow, eat, make waste, change, and reproduce. Rocks and minerals, not doing any of these, do not have life.
Your life is the time from your birth to your death — you can see this in its origins: "to remain, persevere, continue, live." Life is everything that happens: When people say, "That's life," they mean all the events and tendencies, the human condition itself. You might hear about "city life" — or "country life" for that matter — meaning the habits and expectations of inhabitants of a particular place.