The 10 of Swords is about saying final goodbye to things or people that are bad to you.
Before embarking onto the final suit in the minor Arcana, the Pentacles, where you will use everything you've learned in Wands, Cups and Swords to accomplish your final goal, you have to get rid of some excess weight.
You can safely let go of whatever or whomever has been bothering you for so long now.
Knowing what you don't want is an important step toward knowing what you do want.
Now is not the time to burn these particular bridges yet. Give it one more chance.