One of my friends was just cut off by me, and now it is so peaceful that I wish I had done it sooner.
Is it because of a recent event?
It's mainly because of my past, I believe there are some people you simply need to cut off no matter what happens.
When you're in a toxic relationship with somebody it is natural to just want to cut them off. Sometimes it is better to try communicate with the person and potentially fix any problems that are ongoing with the relationship, though. Simply cutting them off could result in losing a valued friendship when it could have been fixed.
It's too late for me.
I don't think that it is ever too late if you were close with the friend, because you can always attempt to maintain your relationship. I know it feels hard, but friendships are worth keeping around if you can.