Let us assume there is a Supreme Power quite outside our understanding - but since we did not make ourselves there must be something else. Even a living cell created in a testtube did not create the energy which supplies life, only the physical matter - which provided a suitable environment to receive it.
In answer to your question, I would say that Life Lives Us,
A person who commits suicide will find themselves not 'dead' but in another dimension - because no-one can 'kill' life. I expect that Life can 'withdraw' itself - if it wants to! But we cannot do anything about it. We do not 'live life'. 'LIFE LIVES US'. The energy of Life comes from outside outselves, and we are quite unable to control it. All we can hope to control is our behaviour, how we use the gift of 'Life'. Probably this Supreme Power is hoping that we will use it to improve ourselves (our Spirits? Souls?)