How can I develop and keep my own positive energy?

Lama Ole’s answer:

That is not always so easy if one meets circumstances that pull one down all the time. I would say read books like The Way Things Are or books about the Great Seal, so that you are in constant contact with the enlightened view. Always remember that the world around you is truly a pure land and that everybody is a buddha, whether they have recognized it or not.

Start with the view that highest truth is highest bliss. Then on a practical level, use the meditations in which you let buddha forms arise and then melt together with them, becoming inseparable. If you do this for a few minutes every day—maybe even while waiting for the bus or subway—it will be of great benefit. When making love, try to be aware and make your partner really happy. All the different possibilities are there—use them.