Downtown in a cafe I had time to continue reading in the book "A gradual awakening" by Stephen Levine. The book is on awakening, on meditation.
Levine recommends noting while meditating: It is a technique which keeps us on the track. Thoughts can be noted as wishes, planning, anger when observing them.
I highly recommend this book to those who are interested in meditation. It helps to understand. It is one of the best books on meditation.