I am paraphrasing from Peace Is Every Step by Thich Nhat Hanh.
1. Breathe in.
2. Say to yourself, "I am breathing in."
3. Breathe out.
4. Say to yourself, "I am breathing out."
5. Or, simplify even more to say only, "In" and "Out."
Keep your mind on your breath. Your breathing, your mind and your body become more peaceful and gentle. It is an easy and enjoyable meditation.