The practice of behaving in a way characteristic of a responsible follower of Jesus, especially the accomplishment of mundane but necessary tasks.
Following Jesus isn't all about performing signs and wonders. Sure, there may be some of that but most of the time it isn't walking on water...it's watering the garden, it's paying the water bill on time, it's advocating for clean water...and even that work--which may seem like exciting justice work--when you get down to it, but it mainly involves sending emails and calling people and setting up meetings...mundane but necessary tasks...doing these tasks as Christ would do them, with integrity and honesty and selflessness, that's Christian adulting.
Most of the time following Jesus isn't performing miracles surrounded by crowds, it's putting a band-aid on your grandson's booboo; it's walking for a cause like curing breast cancer; it's sitting by your friend as she receives chemotherapy treatment. Not exciting, not glamorous, but necessary...doing these tasks as Christ would do them, with integrity and honesty and selflessness, that's Christian adulting.