Alcohol is a bad idea, IMO, especially during times of hardship. Stick to the recreational drink when you’re in a good mood.
Grieving over a loss is normal–its human instinct and should not be construed as weakness. Let yourself grieve for three days–let yourself be sad over the loss, and don’t rationlize. You plan ahead to stop the grieving on Saturday, and on that day, its all over. You have moved on (tell this to yourself in the past tense).