yes, it is good to exercise your own energy or ashe - however, one should also top up their own energy or they would get depleted. We live in an energy soup- energy is everywhere all around us, and we draw from this energy to top up our energy or to use it in our spiritual practises.
think of it as refuelling your auric energy body, kinda similar to the way you would eat physical food to refuel the body - if you do not eat regulalry, your body will 'feed' on itself by using up its own food supplies stored. Similarly, if you do not learn to draw energy from around you, your pyschic energy will get depleted.

you can draw energy from plants, the sun, the moon, and other natural forces - do nto draw energy from another human being, as you could end up assimilating any prolems that they might have as well.

To draw energy, simply visulaise the enrgy flowing into you via your palms or feet from the earth, trees, the skyies, the sun and so on. Visulaise the nergy as bright white light and 'see' it enter your body - with practise, you will be able to visualise the energy itself and you will certainly feel the difference in your body and min when you draw energy

light and peace
aborisha78