The law of the Spirit of life has set you free from the law of sin and death. Paul describes not a wish here but an accomplished fact. You have been set free, not: you will be someday.
There are days when old patterns scream loudly. Guilt feelings come without cause. But you live under a new law: that of the Spirit who gives life. The old system has no right over you anymore. The cross settled the account.
Today you can treat this as a completed reality, not as a hope for the future.