From the day you were born until this present time, God alone has kept you.
God has comforted you and given you peace.
God has guided to with His hand and His angels.
God has watched over you and protected you from seen and unseen dangers.
God has sustained you in His strength both mentally and physically.
And He will continue to watch over you until the end of time.

Yes, it was God alone.

Isaiah 46:4 NIV
Even to your old age and gray hairs, I am He, I am He who will sustain you. I have made you, and I will carry you; I will sustain you, and I will rescue you.