A built-in reminder is the simple understanding that whenever any kind of unhappiness arises, you know you've lost the now. That's a built-in alarm clock. The moment you realize you've lost the now, come back to the now.
Eckhart TolleWhen you get into your car, shut the door and be there for just half a minute. Breathe, feel the energy inside your body, look around at the sky, the trees. The mind might tell you, 'I don't have time.' But that's the mind talking to you. Even the busiest person has time for 30 seconds of space.
Eckhart TolleBeing is not only beyond but also deep within every form as its innermost invisible and indestructible essence. This means that it is accessible to you now as your own deepest self, your true nature.
Eckhart Tolle