With meditation it's much the same. The path to stillness becomes more familiar the more often we use it. Carving out a regular time in the day is often the best strategy to begin to make sitting meditation a part of your daily routine. Most likely that's going to be at the beginning of your day before the hustle bustle of the world sets in or in the late afternoon or early evening after the hurly burly has settled down and you may really need a way to unwind if it's been stressful or hectic. You might even consider bookending your day by meditating.