Trekking the Himalayas is not like walking up mountains gradually. The landscape consisted of many steep ups and downs. Going down is as demanding as going up to the base camp, so no matter how tired you are when you are in the middle of the trek about to give up, you realized that you will have to go through the ups and downs again on your way down. In the end, moving forward is your only logical choice.
In order to grow as a person, you have to move forward regardless of the speed. Going backward is impossible in life and staying still means you are spending your life doing nothing. While trekking, you can’t just stay still unless you want wild animals to devour you as it gets darker and darker every hour. Even if you move slow, you are way closer to the destination than standing still. The key is to move forward.