Many people ask this question about NLP because they are searching for any tool that can bring them more success. Often it is enjoy closer relationships with people, to be more successful at work, to excel in sport, or to just be happy.
To find an answer I interviewed Bernardo Moya, because if anybody knows he certainly should. He is CEO of NLP Life Training, which is the largest NLP training organisation in the world. Transformational programs are delivered by the co-founder Dr Richard Bandler, and other world class trainers.
Watch this video, which should answer a lot of your questions, with lots of practical tips too.