I found the following information regarding grounding techniques in the forum topic entitled:
Help with Negative Effects of Meditation
Thank you freeform for posting it.
"Excess energy in an undeveloped head centre can cause serious, permanent damage - stop pushing energy in, and stop anything that involves imagining light, or any visualization, especially anything to do with the head.
For grounding you need to first learn how to relax your body completely - sounds simple but there are always small tensions that come up when you pay attention. For this you need to learn thorough abdominal breathing (and softening the tummy) - there is a fantastic book called "unwinding the belly" - teaches you both of these.
You should activate the bottom half of your body - doing simple excersises like well structured squats will get quick results. Also pay more attention to your feet - foot massages, shoes with a very thin sole, walking barefoot on rocks or at least just round your house. also ankle rotations are very good.
When you've done the above daily for a few months, you can add some simple dan tien meditation - which involves sitting upright in a chair (not using the back), your feet firmly planted on the floor, your hands covering your lower belly, taking long relaxed belly breaths that you learnt from 'unwinding the belly'.
After you've done this for several months and can physically feel (not visualize!) a connection to the ground/earth (you may be able to feel a very slow dense buzz going between your belly and the ground under your feet) - then you might consider learning standing meditation...
this is quite important for you! you may notice that you get some genius ideas or thoughts that stop you doing any of this - this is just the mind sabotaging you, notice when this happens give yourself a knowing smug smile that you caught it in its tracks."
