Because you can go long

Short term results doesn't matter

At all, easy comes, easy goes. Combining them with ever increasing expectations from external sources is a recipe for disasters leading to a few hacks here and there, pushing through some pain to meet some expectations set by some people you don't even know. A few strong branches built upon a tiny root. Of course some people that will jump through the hoops will perform better than you do, at a certain moment in time but what about the other times when injuries and soreness come to collect their debt.

You do it for you

All the narrative you see, showing 120% efforts to do another rep, to finish another set are bogus. Those people are professionals in their field of choice, they have other competitors, a need to exceed expectations, to innovate in order to move forward just like you and me do, in our chosen professional field. You see them perform their work with the same intensity you perform yours but, what about everything else, where the only competitor is oneself? The practice allows you to choose good enough for you, to gauge your effort to outperform the you from yesterday, to do those activities that will improve the competitive future you.

At your own pace

Long lasting change is built with some effort, not all the effort, with daily progress not once a month, year after year not once in a decade. Some effort can be paid daily, with small adjustments and some variation along the way.

You will fall short, it's inevitable

There will be days in which even the basics will feel like completely alien, a beginner in a field where you consider yourself an expert. In those days you can choose to go with the narrative of "no pain, no gain" or you can let the practice be your ally, take a day off and come back tomorrow for more, it will wait for you, it will be the same for you.

It compounds

As with every other change you want to make and stick with, it starts small without noticeable change and ends up in change happening without notice. It's easier to remove a snack a week, to change one side dish a week than going all in from day one. There are successful cases of people who had decided to commit and started the very next day, those cases are not reproducible for many of us. Changing from day one or over a period of six months to change and adapt your routine won't matter three years from now. Stick with it, most of the time, and you will get the results you want.