Hmm. For a very long time I felt I had no consistency in my life. It was self-imposed and due to driving by the seat of my desires, to mix metaphors. I got my work done week to week and so on, but could I make it to a pre-determined event on a given day at a given time? Unpredictable. Which means that basically, no, I couldn't.
My day to day and moment to moment desires were encouraging me down a less healthy path a majority of every minute. I had to learn fucking off didn't actually feel good. But when you're in a loop of funk and "hey, I'd rather do nothing[AKA I'd rather sleep/drug/drink] than leave the house or shower or change my clothes despite it being the 5th day in a row that i haven't done any of that," it's hard to realize that "actually doing things" is the better path. It was a life of resisting doing things for...what? Nothing. To feel defeated at the end of each day anyway.
Personally, I felt I needed more consistency in my life, and less 48-hour-all-nighters backed with day-and-a-half-long sleep sessions. I was really tired of living my life according to the day or hour's or moment's whim. So for me, it was an improvement to impose routine and rigor. But it's not for everyone -- from the outside, I was extremely functional before, without routine, so I can't even (and wouldn't) try to take a place of 'authority' or 'righteousness' and claim it 'saved my life' or anything, ha. It just made me feel better about myself to force myself to leave the house to go to work, to eat healthy food, to take a shower every day, and so on. I had to realize it might be a thing of forcing myself...but ultimately, in the long run, it would feel better. It was about trading the single moment in my vision for the whole week. Or month. Or year.
One day I might go back to having less routine. But for me, it wasn't healthy to give in to the desires of the moment, as half the time those desires were, let's be honest: drinking, doing drugs, or generally fucking off however I knew how and could get away with so long as I hit my deadlines and turned my work in on time.