Some changes are better attempted in an instant. Jumping into a cold swimming pool instead of wading in, for example. Or ripping a band-aid off rather than enduring the pain of a slow removal.
Other times, a more incremental approach is better. I failed posting to my blog every day because I couldn’t keep up. I then learned publishing once a week was sustainable. After a year, I’m upped that to twice a week.
Sometimes it’s hard to know from the get-go whether a radical or gradual change will be more effective. If one doesn’t work, be sure to try the other instead of simply giving up.