The White Light Bubble/Pyramid Shield
Visualise yourself standing in a bubble of white light descended from the heavens above, the source light of all universal energy fills your bubble keeping you safe from harm.
Similar protection but instead see a pyramid shield not letting any negativity in, this is your protected space. Know that you are protected on all occasions.
Closing your aura means simply just that, bringing your aura fields inward so you don't react to negativity around you. Its another way of closing down as well.
The Tornado technique - Visualising a tornado simply means that you can visualise a whirlwind of light whirling around and spinning out all negativity in your path and future path, clearing the way forwards to allow light and love into your path and present.
Suit of Armour - In some aspects might be quite heavy to put on but a suit of armour also is effective in protecting your vessel and energy.
Violet Fire - transmutes and purifies any negativity or guiding energy around you. Detoxes any negativity around your person as well.
Light shield grid - picturing a light shield in a grid formation can also protect your personal space from harm and shield any prying eyes that seek to peer in like cold callers, jevovah witnesses coming to your door, which you don't want or need if you are in the house on your own accord.
Orange Light - bright orange light can ward people away from appearing in your path. Its like a signal that allows aware people to stay back from approaching you.
Diluting/dimming your light and your aura - would not recommend this lest it causes you harm but diluting your aura can also dim your light so that no psychic vampires can also find you, if your light is visible in the sense that you are on or open, moths are drawn to a single flame, so maybe remember to close down after work or dim your light off so that you are not working or open.
Cloaking - cloaking yourself in a blue light cloak covering you from head to foot also shows that you are shielded and can conceal yourself from harm or times of danger.