We have said this often. However, suggestions should always be given before sleep, that the subconscious will maintain the organic integrity of the physical organism. This is basic.
Suggestions should also be given so that a harmonious relationship be maintained among all levels of the personality structure. Suggestions should be given that constructive tendencies are given free reign. Perhaps more important, suggestions should be given that only constructive suggestions will be reacted to. These suggestions give you a leeway.