The right solution to the situation facing you, as a human, this minute, is something you must determine. For some, this is painful. Some humans, faced with this perplexing dilemma and used to the rigorous answers that their religious ideology gives to them, feel naked and alone. However, this situation is one that the entity new to the 4th Density will face ad infinitum. Get used to it.
Confusion is natural.
When you ask how you can discern good and evil, how you can they discern what may be a figment of your imagination or something generated from your own mind from what may be a spirit speaking to you or trying to possess you, it is natural to be confused. This is up to each individual to determine for themselves. There are clues, so that it is possible to differentiate your individual soul from others, to understand whether another spirit cares for you or does not care for you, and this doesn't require reading body language or blinking neon signs. There are thousands of indications, just as when rising in the morning, you understand that it is morning and not evening by glancing at the sky. Those who complain, asking when they are going to be told to truth, when will it be revealed, or when they will we be led to the truth, are demonstrating an essential spiritual laziness.