Immediately. Once you accept that you’re going to feel challenged, uncomfortable, frustrated, and at times, struggling. None of it is easy. But the sooner you recognise that it’s the same for everyone else, it gets easier.
Instead of hoping for smooth, you prepare for the coarse. Instead of yarning for easy, you expect for it to get even harder. Acknowledging that there will be moments when you want to stop, retreat and fall back into your old habits will somehow make it all more bearable.
And then one day, it will get easy.