Have you ever examined what it means to lose vitality around certain people?
Or even more, have you ever observed how you drain others?
Some people demand emotional energy from us, i.e. attention, adulation, praise, jealousy, envy, etc.
However, this is often accompanied through stealing sexual energy through one's lust, vanity, and pride, wanting to get other people to look at us, to envy us, to admire us through sexual sensations.
We lose energy in accordance with the malfunctioning of our five psychological centers. While each has its own energy, the most powerful (and targeted) is sexual, since it is the quickest and most volatile.
For thirty years I sought God. But when I looked carefully I found that in reality God was the seeker and I the sought. -Bayazid al-Bastami