I think that the real answer is that different things work for different people.

Personally when I make changes in my life I always go 100% straight away. I have a really hard time with half measures. Like when i wanted to lose 5 kg I started logging everything i ate and just was super strict with ny kcal intake for a year to not gain it back, no cheat days. And when i went vegan a few years later i did that cold turkey.