There are a number of ways to consider what is commonly referred to as 'grounding'. One method would be to acknowledge that every cell of the physical body is a mixture of both heaven and earth, spirit and matter. In this way, you ground through each and every cell of your body. If a cell weren't grounded, it would not exist. It is the blending together of both the subtle and physical energies that nourishes your body.
When a Soul looks down into this dimension and considers incarnating, it draws to itself all of those energies desired for the incarnation. This includes all of the earth energies that mirror the soul itself. Remember the phrase 'as above, so below?' Every possible energy of heaven is mirrored in the earth. The soul draws both the heavenly and earthly energies to itself, simultaneously .
This motion of drawing spiritual and earthly energies together occurs during the months preceding conception. No matter what choices you make, the energies from both spiritual and earthly realms are available to support you throughout life. "As above, so below".
Any energy that is a part of your soul, is also and already a part of the planet earth. You exist because the energies existed within the earth to create you. Any guides or angels also have equivalent energies which are a part of the earth. In this way you have 'grounding' through both your earth soul and your earth angels.
Your physical form is a result of the earth soul responding to, and in some cases perhaps even calling forth, your heavenly soul. If you are in form you have a connection with the earth, you are grounded. Grounding is the prayerful state of communing with your earth soul.
Oftentimes grounding has been taught as dropping a plum line down from the first (or belly) chakra) into the earth. But if your soul is both of heaven and earth, you are already connected. You need not 'send' any energy anywhere. Your grounding is inherently a part of who you are, not something you have to work at. Relaxing, allowing the connection that is natural, opens your body to feel the support of your earthly soul.
Grounding then becomes an acknowledgement of support from the earth, and an equivalent acknowledgement of interaction between spirit and form. While you can continue to frame this interaction in terms of a plum line, you may want to explore other options. Perhaps even letting the line expand in diameter to connect with more of your body.
One image that I've found helpful is that of sitting on a large ball. Female bodies tend to like to ground on a higher percentage of female energy than male bodies. Psychically it looks to me like a large ball of energy supporting the tailbone. Male bodies will have some amount of female grounding, so this idea can be useful for men also.
Visualize sitting, even bouncing, on a large exercise or medicine ball. The entire buttocks, lower torso, knees, feet and ankles are swaying and moving with the motion of the ball. Grounding occurs within the space inside of the entire ball, and wherever the physical body is moving. The ball is larger in diameter than the buttocks, so earth soul energies are all around the physical body as well as underneath it.
Grounding energies are usually felt in the lower chakras, but in this model can be noticed outside of and around the physical body as well. In this image of bouncing on a ball, grounding occurs through the space of the ball itself and all of the physical body and aura that is responding to the movement of the ball.
The earth soul is therefore acknowledged as being in the space surrounding the physical body, in the area of the ball upon which the body sits, and in the fluid quality of motion engendered by the ball. In this way the female body energies have permission to feel surrounded and safe in their own grounding energies. It is again not a sense of imaging that this must be done, but rather a sensation of releasing into the energies which are already present.
Another way of invoking this same consciousness of connection with the earth soul, or grounding, is to overlap chakra energies of your hand and feet. No special pretzel yoga training is needed for this! Simply sit in a chair with your feet flat on the ground. Place your hands, palm side down, on your knees. Imagine your breath coming up through your feet, traveling through your legs and up into your pelvis. As you exhale see your breath travel back down, gently, into the space underneath where you are sitting.
With each breath allow your exhalation to move a little deeper, and let yourself draw your breath from a little farther underneath your feet. Allow the breath to loop underneath you, exhaling into the same point from which you are drawing breath. Let it always be easy and gentle, never pushing. Let the quality of your breath be one of surrender to the sacred earth and your own earth soul.
This is a simple technique that you can use in meetings, at your work desk, or even while talking with someone. You need not set aside time each day for this activity. Simply incorporate it into your work or drive time routine a few times each day and see if your perceptions about grounding and about yourself change.
As the body grounds it simply acknowledges the part of itself which exists within the earth. It simply remembers itself more. As a result you may notice that your feet become warm or tingle a bit. You may notice that your breathing becomes slower and a bit easier or deeper. Your perception of your body and the space around you may become more acute, or you may notice that your mind clears and the chatter subsides.
As you ground and let your earth soul receive attention and prayerful nourishment, you may even notice that chronic issues begin to resolve. Working on the heavenly aspect of personal issues is something most people have done diligently for many years. What is left is often the part of the pattern held by the earthly aspect of the soul. Using breathing and visualization can help you understand the lessons your body is teaching you.
As you allow yourself to experience your earth soul, you allow the result of joining heaven and earth, which is manifestation, to be possible.