Positive Thinking!!

You must consider that in the beginning you are training the mind as well as the body. The mind, after all, makes you want to train; it turns on the body. Because the mind motivates you to train the body, you have to train the mind first. If the mind doesn't want to lift weights, the body won't lift them.

The mind is incredible. Once you've gained mastery over it, channeling its powers positively for your purposes, you can do anything. I mean anything. The secret is to make your mind work for you-not against you. This means constantly being positive, constantly setting up challenges you can meet-either today, next week, or next month. "I can't..." should be permanently stricken from your vocabulary, especially the vocabulary of your thoughts. You must see yourself always growing and improving.

You should strive to improve your body a little bit at a time. Don't push the mind too much either; let the mind stay hungry for more, tease the mind a little bit. This is why I suggest you start small, with a fairly easy program. Let the body say to the mind, "I feel good, this isn't too hard. I'm ready for more!" Give it more, give it a little bit more. Then, slowly, as the mind is ready for it, you can increase the amount of weight you use and the number of repetitions you do of an exercise.

This is taken from Arnolds book "ARNOLD: The Education of a Bodybuilder" written in 1977.
These very thoughts can be used in any type of positive thinking. Whether you seek inner healing, self-meditation, or just want to be more of a positive thinker...
This played a mager role in his training and how he succeded in obtaining his goals..
Give it another read and I am sure we can all learn from this piece of information.