It is fairly common to dream of ants. Ants may signify that there is something in your life that is bugging you.

One of the concepts central to the Law of Attraction is that the things you think become reality.
The things you think are energy, just as the entire universe is energy. As you ponder your reality,
or simply let thoughts run through your mind, you are shaping your reality. You do this by means of the Law of Attraction.
The energy you send out collects with like energy. Then, the universe responds to your feelings by returning the energy back to you.
This happens for good or bad feelings.