Meditation is simply a matter of practice

In practicing, don't think that you have to sit in order for it to be meditation, that you have to walk back and forth in order for it to be meditation. Don't think like that. Meditation is simply a matter of practice. Whether you're giving a sermon, sitting here listening, or going away from here, keep up the practice in your heart. Be alert to what's proper and what's not.

Don't decide that it's okay to observe the ascetic practices during the Rains retreat and then drop them when the retreat is over. It's not okay. Things don't balance out in that way. It's like clearing a field. We keep cutting away, cutting away, and then stop to rest when we're tired. We put away our hoe and then come back a month or two later. The weeds are now all taller than the stumps. If we try to clear away the area we cleared away before, it's too much for us.

Ajahn Mun once said that we have to make our practice the shape of a circle. A circle never comes to an end. Keep it going continually. Keep the practice going continually without stop. I listened to him and I thought, "When I've finished listening to this talk, what should I do?"

The answer is to make your alertness akaliko: timeless. Make sure that the mind knows and sees what's proper and what's not, at all times.
(Ajahn Chah)