One moment you may think you are losing the experience and the next you may be even more relaxed than before. So if you think it is not working calmly stay at ease for another minute or so. Then, if necessary, give up and have another session 30-60 minutes later. Take a break any time you like - especially when you notice tension or a negative mood beginning to build up. For the first few weeks you may find it more beneficial to take lots of short 3-5 minute breaks.
Most people find it useful to have a relaxing session at the beginning of the day.
Initially your tension level may rise again soon after a session and you may wonder what is the point in relaxing. NLP NLP is used to develop the ideas and themes on this site. I have been using it for over two decades to help me understand how I and other people tick and in my work as a consultant and trainer - and it continually impresses me. There is more information on our NLP site .