​Always use your discernment. ​I like this quote from the Law of One, session 70 question 5:
 

Question: ...Is regressive hypnosis of an individual to reveal to them memories of previous incarnations a service or a disservice to them?

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Answer: I am Ra... There is an infinite range of possibility of service/disservice in the situation of time regression hypnosis, as you term this means of aiding memory. It has nothing to do with the hypnotist. It has only to do with the use which the entity so hypnotized makes of the information so gleaned. If the hypnotist desires to serve and if such a service is performed only upon sincere request, the hypnotist is attempting to be of service.
 

What this means for me is that it is up to the people participating in the session to use the information they received in a positive and constructive way in their lives.

Also, I felt that Lee Harris' "channeling check list" to be very wise and I highly recommend it:
 

1) Remember: Your guides are NOT in charge of you. They are your guides, not controllers who get to run your life. Be MINDFUL of the temptation to give your power away to your guides or discount your own feelings/senses when acting on information. (This can often stem from a similar pattern of giving power away in relationships AND the societal religious imprint of spirit being separate or superior to us).

2) Only ACT on spiritual guidance when you feel ready and supported in yourself and life to do so. Sometimes we aren’t ready to make a change that is suggested, or see things a certain way. The power of channeling lies in the way it asks you to widen your perspective and senses, but it does not replace grounded reality and nor should it.

3) Is your channeling helping your life? Is it bringing you balance, wellbeing, helpful information? If so, proceed happily. If it isn’t, or it feels overwhelming, take a break from it. It can (sometimes) move a lot of energy in and for us and there are periods where you will need to integrate.

4) Do your voices seem negative or unkind? This happens for some although it is very rare. It can sometimes happen when existing mental imbalances are at work, or a trauma history is at play. It can also be a mirror of repetitive or unhealthy relationship dynamics you are in. If this happens for you, do not continue, but do seek help with therapists and healers who are skilled with this kind of occurrence.
 

It's available on his PDF here. He more thoroughly explains these points on his "The Hidden Power of "Working with Your Guides" ✨" video starting at 49m21s.