Outside of those techniques, which are good, you can positively affect your mind by what you eat and what you see. I've really made it a habit to avoid watching too much "TV" and when I do, I don't want to see lots of crazy violence, sex, and drugs. All of those things become a part of your sub-conscience and affects your mood and how you think.

The food you eat can also affect how "sharp" or "fuzzy" your brain feels and how much energy you have. So I TRY and make it a habit to eat a well-balanced diet and no fast food, meats, sodas and other junk foods.

And of course, exercise and get good sleep!!!

Do all those things and I think you'll have an easier time focusing, being more energetic, and happier :-)