To ground, simply relax and find a space in your conscious mind and awareness. Place the soles of your feet on the ground and pour your energy into the earth through your roots. You can also visualize the earth's energy coming up from your roots to meet with the light that's pouring all the way through you and emating or vibrating love, grounding energy, and its all about being at one with mother earth, too.
More importantly, other ways to ground include:-
1. Etheric / Red and Silver Cord - descended from your base chakra for the grounding purposes. Surrounded in a circle of haematite, blue obsidian, garnet, herkmiser garnet, etc
2. Visualize a column of beautiful red light descending from the base/root chakra into the forming of roots into the earth.
3. Visualize roots and mold yourself with the tree to establish roots going down into the earth to ground yourself fully.
4. Find a patch of soil, grass or place you are drawn to sit on the ground and feel the lush, springy earthy energy below your feet.
5. Hug a tree:- one of the other best way to ground is by hugging a tree with love.
6. Meditate in a circle of crystals electively chosen for the purpose of grounding, the circle reinforces protection. The intent meant to ground and or earth.