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You can avoid jail time if you:
1. Don't minimize your conduct when the court asks about it. Even if you didn't intend what happened, being drunk, brandishing a gun, and exchanging words can be a crime.
2. Enroll in anger management and get a drug and alcohol evaluation BEFORE the judge sentences you. Follow up on any treatment the evaluation requires, if any. Judges are impressed when you do this on your own, not when they order it.
3. At the time of sentencing blame no one but yourself. Roll with the punches, and let your lawyer point out any bad conduct by anyone else, but you must remain silent on that issue.
That should keep you out of jail.