I am an Atheist and I got through Nursing school just fine, graduating in my top 5%. I worked in nursing homes for 6 years and have spent 9 years working in the 5th largest cardiac hospital in the nation, working in the float pool, so I work ALL floors.
I maintain a trim, toned weight of 160 lbs. at nearly fifty years of age, and I hike, kayak, and exercise regularly. I even fight in full contact medieval armored combat.
I hiked the Appalachian Trail in 2016, making it 1400 miles from Georgia to almost Connecticut before I had to stop on account of bad water. I am extremely motivated to go back and finish the last 800 miles, and I am working on that as a goal to do in 2021.
I take care of my elderly mother, maintain my own home, my own vehicle, take care of my family, my pets. I do everything I do because I have a motivation to do it.
And I do not need a "god" to either motivate me or to tell me to do the right thing.