Another card which indicates forces opposing you, the Seven of Swords points to there being a single source of your frustration. This is both positive, in that you may be able to identify that source and change your circumstances, and negative, in that this source may well be aware of you and deliberately sabotaging you. The road to your success does not lie in direct confrontation, however, but instead in guile. Instead of attacking the obstacles raised against you, find ways around them.
To get the full traditional meaning and interpreation of Seven Of Swords, I suggest you visit Trusted Tarot and their Seven Of Swords page.