(Forget) Omitting something in a dream means worries, trouble, misplacing things, or heedlessness.
Dream dictionary: Omit dream meanings
…To dream of the commission of this sin forebodes great troubles and misfortunes, if you are in love, you will certainly fail in marrying the object of your wishes, if you have a law-suit, it will certainly go against you, by the treachery of those who pretended to be your friends, if you are in business, some heavy loss will happen to you. Such a dream announces that you are in great danger of losing your liberty and if you are about to take a voyage by sea, omit it for the present, for you will never reach the destined port. To dream you were tempted to commit this crime, and that you resisted it, is a happy omen, everything will flourish with you, be sure it is a good time to begin trade after such a dream. If you have a law-suit all will go in your favour,…
Considering some obstacles or experiences in your dream represents the things in your life that you need to overcome. The dream gives you a solution on how to approach a problem you currently have in your life. It also tells you how to omit this problem if you have a certain doubt or trouble making a decision about yourself.