There are many versions of Reiki Principles given in different books. Written in simple language, they look like routine advice or teaching from the elders but actually they are a way of life. Even a slightly deeper thought would reveal that these principles have a great philosophy and power behind them. Whatever be the version or source, they all mean nearly the same thing and are full of wisdom and the very key to living a clean life with a clean mind.
Nature wants every human being to have good moral values and be fully positive. If your thoughts and conduct are positive, you generate positive energy and transmit the same. If you go the other way, you harm your own self first before you do it to others. All the belief systems teach these ethics, morals and principles; they are basically same in all the belief systems. Islam had taught these precepts over 1400 year ago. Therefore, I prefer to call these principles as "Universal Ethics" rather than "Reiki Precepts". In addition to the precepts mentioned below, you must also remember to be respectful to all the elders particularly your parents and teachers.
Try starting your day by reminding yourself of these precepts. If you make them your way of life, you will find the life much better than ever before. Initially it may not be easier to adjust emotionally and mentally but as you go along with conviction, you will start to experience positive changes.
With negative behavior or unclean thought pattern, your flow of energy might be very week and you might not get satisfactory results from Reiki.
Secret method to invite happiness
Miracle medicine for all diseases
Just for today, do not get angry.
Do not be grevious.
Express your thanks.
Be diligent in your business, and be kind to others
(Taken from Hiroshi Doi’s book, "Modern Method for Reiki Healing". The book says that these are Usui-sensei’s own hand-written Admonitions.)
Just for today, I will give thanks for my
Just for today, I will not worry.
Just for today, I will not be angry.
Just for today, I will do my work honestly.
Just for today, I will be kind to my neighbor
and every living thing.
From the book “Essential Reiki” by Diane Stein
Yet Another Version
Just for today, do not worry
Just for today, do not get angry
Honor your parents, teachers and elders
Earn your living honestly
Show gratitude to every thing