“Then you will know the truth, and the truth will set you free.”
The context in which this was written defines freedom as holding to the teachings of Jesus and being his disciple. I know that for me personally, when I live my life this way, I do feel a freedom. As Christians, we do not and should not expect freedom from pain and loss and hardship. But freedom from inner worries and turmoil is the freedom I feel. When nagging thoughts from the past come up, I can be free of those, too.