25. Get enough sleep
Some of us may be struggling to get some ZZZs with all those negative thoughts swirling around our brains, but getting good sleep is one of the most important things you can do for your physical and mental health. When your mood is wearing down, so is your immunity, and one of the most valuable things your body needs is to simply rest. It’s during the state of rest that your white blood cells work their magic, so take a load off and get in that nap or go to bed earlier every night.
Think of sleep as banked power to improve your mood, reduce irritability and improve your ability to cope with stress. To do this, it is advisable to set up a relaxing bedtime ritual, such as having a bath or reading a book, using blackout curtains to block out the light, and going screen-free for 30 minutes to an hour before you get into bed.