Justice is a very good card to find in your spread if you have acted with kindness and fairness towards others and especially if you have been a victim. It is a significant indicator of a positive resolution, although how and what sort will depend on your own experiences. If you have been unfair, abusive, or otherwise shady and immoral in your dealings, be careful. For the unjust, this card is, at best, a dire warning to change your ways before retribution falls upon you, and, at worst, a simple statement that it is already too late. In neutral cases, it may simply be telling you to seek out balance in your life.
To get the full traditional meaning and interpreation of Justice, I suggest you visit Trusted Tarot and their Justice page.