Extreme psychic attack protection  

Iron nails are placed in house frames for the same reason..

All psychic defenses are based in building your own self-esteem, personal power and confidence.

Some contain more physical acts, but ultimately it is your will empowering those acts.
To purify a space and prevent unwanted, harmful energy from entering, burn purifying herbs.

Frankincense and myrrh are a favorite of both witches and the Catholic Church. Native Americans use sage, cedar and sweetgrass. Southern American cultures burn copal. You can also use lavender or cinnamon.

These substances naturally clear a space. Salt absorbs harmful energy.

Iron grounds the same energy. Horseshoes were pointed down and hung over doors for
this purpose. Iron nails are placed in house frames for the same reason. Potions and oils made of these substances are worn for protection.

Magickal symbols of protection can be worn or drawn. Pentacles, crosses, the Star of David and the Eye of Horus are strong protection symbols, and you can usually find jewelry made with these symbols. Wear this jewelry with the intent of protection. A banishing pentagram, a star drawn starting in the lower left corner, dissolves harmful thought forms and removes unwanted spirits. Repeat it as many times as necessary.

During meditation, start by visualizing a shield of clear crystal around your entire body, about three feet away. State "This protection shield protects me from all harm and reflects love back on the source of the harm." Never send energy back to do harm; it will again return to trouble you. Even if one psychic attacks you first, you are not justified to curse back. By sending love, you neutralize the harm. Wishing good things on your enemies can be the key to defeating them.

They will be so happy with what they have that they stop bothering you.

Bless your harm away,and more blessings will return to you. Similar protection shield visualizations can be used around your home, car, loved ones and pets.

Sometimes binding spells are necessary. Write the name of the person meaning you harm on a piece of paper. Put it in a bottle, bound with black thread. Fill the bottle with sea salt, protection herbs, iron filings and things like John the Conqueror root. Seal the bottle and ask that this person harm you no longer. As long as you do not open it, the binding will last. You can put the bottle in your freezer or bury it in the backyard.

As a last resort, call upon your guardian spirits. Call on your guardian angel, your spirit guides or the Goddess and God. A student of mine protected himself by asking for help from Mother Earth and drawing Her energy up and directing it to the malevolent spirit. Be creative when protecting.

As you claim your power and grow in your magickal abilities, you will move in harmony with the universe and attract less attention from such darker entities. Others wishing you harm will effortlessly roll off you because you know your place in the cosmic dance of life. Nothing can make you skip a beat of your dance.

This is from sacred-texts, an article by Zhahai Stewart:
What to do if you think you are being attacked.
1 - Question if it is really either imagination, or coming from within yourself. Something may be trying to get your attention, but it may not be external, and by focusing on an external "enemy" you may be missing the point.

2 - Check to see if you are yourself inadvertently sending something out; maybe someone is just reflecting some energy back! Nothing is gained if you get into adversarial mode in that case. Many people have been taught that reflecting is the proper response.
3 - Put up a grounding shield. Ground it out, send it to the Mother who can recycle the energy. Grounding is usually taught to every student.

If you don't feel you can be a "conduit" safely, ground it by reflecting it downward to the Earth; that is a big target and easy to hit. By grounding it out, you are protecting yourself, yet not being caught up in it.

 You can learn other methods of Psychic attack defense to remove all the negative energies

If you suffering from some of the signs and symptoms of Psychic attacks as follows:-
Ringing or buzzing in the ears
Electrical pulses through the head
Feeling there is something wrong
Stomach ache, ear ache
Possible vomiting and, or, diarrhoea.
Passing out, dizziness
Pain in the body for many weeks or months after the initial attack.

You will have to stop and learn some psychic attack self defense techniques to prevent unnecessary leakages of energies that is preventing you from enjoying life