20% of the population are hypersentive (HS) people accoring to Elaine Aron (Author of "the hypersentive person"
http://www.hsperson.com/). I think here we might have for sure near the 100% hypersensitive souls.
For some people for different reasons this hypersensitivity is out of control and balance (cause related back to teenage- or childhood or even past lifes). instead of in control of your own feeling, you pick up other peoples feelings up. Even from those not around you. Signs of this are depression without reasons, feeling of psychic attacs, feeling drained in crowded places, unexplained anger (by picking up things from the environment, e.g. in the house you live, or some in your office had a row with his partner. you get angry because you pick it up. etc. etc. etc. etc.. sorry not enought, etc. etc. etc. etc.

Someone clever asked, why we mostly pick up negative feelings. It was said we pick up also positive feelings, but unfortunately our lives are polluted by fear and other low feelings (read more in "The Sensitive Person's Survival Guide: An Alternative Health Answer to Emotional Sensitivity & Depression
by Kyra Mesich, Psy.D.")
Hypersensitive or empathy that is out of balance is basicaly, making emotions of others your own, but knowing why they are there. or you know why they are there, and you are so overwhelmed that it affects you in all parts of life and make it often unbearable.
If this correct (please confirmed by those who know), also spiritual awaking might excalerate this hypersensitivity or empathy (opening of the solar plexus). so if its out of balance, the out of balance is exahlerated..
For many people protection methods as mentioned here else work well, but some who are involved in their busy lives and responsibitities and worries, might just want to take "pill". At least I am one of those, protection needed concentration and relaxations, but I did not have the quite time to be able to concentrate, becuase I was polluted with things I picked up. A circle without end.
Strengthening your boundries, without closing down your system helps a lot. Yarrow flower essences do this job, see below. Often instantly. You can also make a spray from it. I use 10 drops in a small 10mml bottle and take it with me when I know i might be in contact with many people.
I wish everyone clarity

White Yarrow: For general boundary strengthening. A good one to start with if you're not sure which Yarrow to use. For extreme vulnerability to others and to the environment; easily depleted, overly absorbent of negative influences, psychic toxicity.
Pink Yarrow: For people who get overly involved in others lives and in relationships. For grounding and root chakra balancing.
Golden Yarrow: For developing strong personal protection. For people who tend to withdraw. For solar plexus chakra strengthening.
Purple Monkey flower: For spiritual or psychic fear.