What can I do to feel better? I'm not sick, I just feel sort of blah. Make me a list of things of healthy habits I can do.
Here is a list of 12 healthy daily habits that you can start.

1. Get up early. Getting up early is a great habit to have. People have a natural circadian rhythm that controls certain hormones. Waking up early will help you maintain your circadian rhythm.
2. Drink water in the morning. Drinking water soon after you wake up will help keep you hydrated. Since low levels of dehydration are linked with fatigue and headaches, you should drink water when you first get up.
3. Incorporate movement into your day. Human bodies were designed to move, yet many of your jobs are sedentary. You should incorporate movement into your day because exercise has tremendous health benefits.
4. Go outside. Being outside will allow you to breathe some fresh air. The sunlight also provides vitamin D which your body needs. Deficiencies in vitamin D are linked to fatigue, low mood, and depression.
5. Sit down to eat. Digestion occurs best when you are sitting down. 
6. Walking. Although walking is often overlooked as a healthy habit, it improves fitness, and heart health, and prevents gaining weight. Walking is also linked to improved posture and circulation.
7. Cook for yourself. Cooking for yourself allows you to control what you are eating. Cooking is also a form of self-care that you can practice every day.
8. Eat some vegetables. Eating vegetables is a healthy choice. By choosing to eat vegetables, you can reduce the number of unhealthy foods you eat.
9. Limit your phone time. Studies have shown that the blue light emitted from phones leads to a reduction in melatonin which your body needs to regulate sleep. This can negatively affect your natural circadian rhythm.
10. Do some cleaning. A messy physical space around you can affect your mood. Cleaning up can reduce frustration and make it easier to cook for yourself.
11. Read something. Reading can stimulate growth, reduce stress, reduce age-related cognitive decline, and help you sleep at night.
12. Get plenty of rest. It is recommended that you get at least 8 hours of sleep at night. Low-quality sleep and lack of sleep have been linked to several ailments. 