And don't be surprised if when you start fixing your sleep and nutrient intake you get more tired and sick first; it means your immune system finally has a chance to get some work done. In the longer term it will always help you feel better, it may take a few days before it starts taking effect. It's fine if you don't do all of these at once the first day. Slow and steady wins the race. I got very sick in november, and it took months to recover. Doing the above consistently has helped a ton.