When you are developing your psychic gifts, it is possible that you may, on occasion, open up unawares, and in that case you must always close down straightaway. This is to protect yourself by deterring unwanted and uninvited spirit entities from calling upon you unexpectedly and inconveniently.
You, should be the person in control of you, at all times. If you start opening up all the time for unimportant reasons, you may attract the attentions of unwanted and unkind spirits. This can cause havoc in your day to day life. It can even make you ill if you do nothing about it.
Remember, all humans have to take their transition to the spirit world when their time on earth is over; after all, we are all spirits, but not all spirits are essentially nice or kind spirits. There are wonderful souls in the spirit world like Mother Theresa, but also there are lower souls, such as criminals, who are in the lower realms of the spirit world because they have a lot of atoning to do.
These lower souls are not allowed to mix with those more enlightened souls. If you make certain that you only work with spirits whom you have invited to join you, and ask spirit, in prayer, for only the highest and the best at all times, that is what you will have, and all will be well.
It is far better to have these ground rules from the start of your development so that you do not have these problems at all. But, it is never too late to put your safety first.