The Six of Swords reversed indicates that you are trying your best to move on from the past and make the important transition. However, since this card is reversed, it is clear that the are some challenges you are facing and no matter how hard you try to leave the past behind you, it keeps catching up with you.
Similarly, this cad might suggest that you are the one resisting this necessary transition. Maybe you feel it is something forced or that you were not in charge of making that decision.
In a relationship reading where the relationship is relatively new, the reversed Six of Swords may indicate that you have not moved on from a past relationship and are carrying a lot of'baggage‘ with you. You need to work hard at leaving this behind you otherwise it will continue to plague your current and future relationships.