I was once a shoe addict back when I was disconnected from Nature and Myself, eating the Standard American Diet, not seeing the Sun very often.
Grounding to the Earth was the first, easiest, cheapest (free), and least time consuming step towards reconnecting with myself and taking control of my health and mind.
Still to this day, it is one of my favorite and most important daily practices alongside basics like Meditation and drinking pristine water.
"Jet Lag" is nothing but your body needing to reconnect with the Earth. Spend 15-20 minutes barefoot on the earth every time you travel and you will never experience it again.
Also, if you need shoes, there are many options now of grounded shoes that allow you to maintain your connection with the Earth and protect your feet (if you are in a situation where it is needed). When I wear shoes, I exclusively wear grounding-enabled shoes.
Thanks for talking about this extremely important topic @rainbowrachel !