Shields, practice, shield, practice, shield. Learn how to collect and cultivate natural elemental energy and blend it into a shield. Learn to sense the shield and adapt it to deal with different people. Learn to pull the shield in close to your body, when they come close. Meditate and do body scans and make sure suckers are not on your body. Energetically clean them off of your body.

Nothing simple here. It takes work and practice. A hardy laugh can help you fill out and know your own physical energetic place. It also tightens up loose energy, where the emotional leeches try to get you to have sympathetic negative emotions.

Never face these people directly or at 90 degrees. Face them catty corner 45 degrees. Body language by crossing arms or legs, discourages interaction but also disrupts some of the probing energy that some do. Keep ones mouth shut. Open mouths leak energy and encourages submissive victimology that these leeches pick up on. Crossed arms and a finger across the lips help strike an internal attitude of listening (good) and blocking probing energy without coming across as too defensive.

Turn off empathy by learning to have your own emotions, and manage them.

Emotions and how it works with energy. Never ever, ever feed vampires or other beings.

Every emotion has a positive and negative side to them.
Happieness if giddy your wasting energy, joy tightens it up and fills out your form.
Anger generates focus which collects energy for a purpose. Mad bounces it around and is flung around.
Fear you loose energy, cultivate a respect you can steel your own energy.
Anxious, you can be nervous and loose energy, or you can be pensive, planning you next set of activities, preparing your energy to act on specific things.
Sadness, if you recognize loss, you can order your own energy. Or be morose and waste the sad energy.

if you pay attention to these differences, you can make a positive emotion, and notice how it works energy in your body, versus what leeches illicit which are negative emotions. Learn to control your own emotions and don't feed the leeches.

Positive emotional cycles Happieness, pensive, sadness, respect, anger, happieness..... is the positive flow of emotions for grief and other things. Notice if something disrupts the cycle or illicits one over the other. Unbalanced energy will cause leaks, that things feed off of.

These are the basics. Practice. From basics you develop finese and a better understanding that can be intrepeted with advanced techniques.

Rarely is there a benefit to a donor. Energy blockages removed create psychic weeping wounds. And cycled or amped up energy fillers, tend to disipate and act as a debriding agent to encourage more leaking of energy. Even if the leak is managed benignly, the negative energy block is gone, there is a reason for that block being there. Usually there is psychological and somatic catharsis that occurs. Rarely unmanaged does the individual work out the psychological ramification of why it is there in the first place. After much drama, individuals recreate the blockage or someother disease ensues shortly after. Critter extractions are different, but still they are drawn to an energy source with an equally compelling psychological precursor for this happen.
Negative energy in the feeder rarely gets cycled and cleansed properly. It takes most of the energy gained to clean it. The net effect seems like more but ends up being much less, and causes another feeding cycle. The negative detrious of energy, scours the energy channels and physically causes a need for the feeding cycle to increase. Eventually, this cycle collapses and the feeder's health fails fairly quickly. Donors health starts failing, being so connected to a feeder they never replenish their own energy and their core energy becomes drained, and the body fails. Cancers and other immune disorders start plaguing both feeder and donor. The donors start becoming vampiric also. A social daisy chain of energy feeding that bodes not well for the groups or the individuals alike. Each and every time, I warn, I step back, watch it continue and the drama ensues. Behaviors and energy feeding becomes addictive. Like any addiction it has costs.

I have only seen two vampires who were skilled enough and conscious enough to ethically feed, and manage their energy conservatively, and matched amped energy back well enough that encourages natural feeding from the environment by the donors. The donors come and go. Some to go back being normal, others slowly disintegrate, and others to be vampires. Everyone else it is a free for all damage fest of addictive personalities.

This is not theory. This is observed behavior by myself and others over the years. People can spew platitudes and the wonders of sensuality of vampires, or chakra cleansing or energy play, when the net effect is always, always the same. Chakra alignment and cleansing needs to be done by the individual. Rarely do people need help. Always there has to be a high level of competency and skill that people have to have to do these things. The people doing stuff like this, already addicted to what they do, won't listen nor spend the time to develop a level of skill to approach these studies safely. Surface energy play is one thing. They don't have to go to the chakra's or kundalini or any core energy, but they do, and they feed. And they do so poorly with lots of ambient loss of energy, feeding other vampires. Several classes and play over a few years makes people extremely dangerous. Daily development and cultivation of energy for perhaps a decade one may be ready to start to learn something sophisticated, safely.

I have been doing energy work, studying, practicing, observing and teaching this for 40 years now. And I am still learning. I have watched magical practitioners and vampires loose their health, their mental stability, and cause social chaos over and over. I have lived a hard life and I still look younger than I am.