To dream of a pickpocket, foretells some enemy will succeed in harassing and causing you loss.
For a young woman to have her pocket picked, denotes she will be the object of some person’s envy and spite, and may lose the regard of a friend through these evil machinations, unless she keeps her own counsel.
If she picks others’ pockets, she will incur the displeasure of a companion by her coarse behavior. ... Ten Thousand Dream Interpretation
Depth Psychology: The pickpocket is warning you against being careless with your “inner reserves.” and suggesting that you make sure others won’t rob you of them. See Thief, Robbery.... Dreamers Dictionary