These kind of questions are difficult for everyone to complicate. I find having enough protein at work helps me stay calmer and the brain to focus better. Every 3-4 hours I have tofu or yogurt or unsalted nuts or milk or whatever. THat may not solve all the problems but it could reduce your anxiety level to a coping point.
Going back to parents house is a disaster plan not a viable option. You have a job. Go home and shower and nap and have good food to eat then draw or paint for an hour. I used to count the days till the weekend when I would allow the artistic impressions to fly onto the paper.