Now, it must be said that concentration practices, like all practices, have their shadow sides. For instance, high and unusual experiences can become addictive and seductive, causing them to receive more attention and focus than they deserve. They can also lead to people becoming very otherworldly and ungrounded, very much the way that hallucinogens can. They can also bring up lots of our psychological “stuff.” This last limitation could be a benefit if we are in a mood to deal with this stuff. Perhaps the most important limitation of concentration practices is that they do not lead directly
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