Eating right means eating healthy food - protein and fresh vegetables from healthy sources, not from factory farms and not from multinational corporations. No white flour, rice, pasta, etc. No sugar. No soda pop. "Eat food, mostly plants, not too much." Luckily, healthy food is often the most economical.
Exercise is readily available when you grow even some of your own food, and bicycle even some of the time instead of driving. Luckily, healthy exercise is often more economical than business as usual.
Getting plenty of sleep enables you to think clearly, and it also enables your body's immune systems to work properly.
When you get a cold or minor infection, you don't need all the stuff advertised on TV, and you usually don't need to go to the doctor. You just need to take the time, and feed yourself the healthy food, that your body needs to heal itself. Fevers and congestion are part of the healing process; let your body do the job it's evolved to do.
Trust your body. Learn to listen to it, and it will tell you what it needs. Learn to be your own doctor.
Don't be afraid of death. The death rate is always the same - one per person.
The true tragedy is realizing on your deathbed that you were afraid to live your life to the fullest, and to be the best person you could be.
