Eat healthy food
A person should be careful to strengthen his or her physical and physical health by eating a healthy diet including fat-free meat, fish, fruits, vegetables, nuts, whole grains, and legumes instead of fried potato chips, desserts and processed meats; Healthy eating helps to supply the body with vitamins, minerals, and other nutrients that give a person a better feeling, give him plenty of energy, and help relieve stress. 
Healthy eating is one of the best things you can do to prevent and combat many health problems, such as heart disease, high blood pressure, type 2 diabetes, and some cancers.  Drink between eight and ten glasses of water per day; they do not contain any calories as opposed to other beverages that contain many calories. 
Physical activity and exercise help build a strong and healthy body by regularizing, for example, cardiovascular exercises to improve physical ability and burn more calories. Examples of exercise can be: weight lifting exercises for muscle building , Increased metabolism, walking on gyms, jogging, and outdoor activities such as mountain climbing, mountain climbing, kayaking, and other activities and sports. 
The brain and the human mind naturally tend to achieve goals, and the person usually gains more confidence in his or her ability to succeed after achieving each goal. For example, a person can set a short-term administrative goal of continuous work for half an hour without tampering with the phone or answering all Mail messages at a specific time, or a major goal of losing twenty kilograms of weight. 
Train the mind
It is advisable to train the mind to see the positive and negative things; because the human mind tends by nature to focus on the negative things, and give them the importance of contrary to what he does with positive things, Dr. Heidi Rider pointed out that studies show that negative events affect people five times more than Positive events, while they also have to focus on the positive things that happen to them. For example: instead of saying, “I have made myself invisible to everyone,” one can say, “I realize that I am a human being, 4]
A person can train his mind to see things in all its negative and positive aspects in times of calm by remembering the difficult events he has encountered in his life, and remembering things that later turned out to be positive. This helps build a reflective capacity to see the problems as challenges instead of looking at them. As disasters. 
KEVIN RAIL(11-9-2017), “How to Get Fit & Strong Naturally”، www.livestrong.com, Retrieved 21-1-2018. Edited.
“Healthy Eating – Topic Overview”, www.webmd.com, Retrieved 19-2-2018. Edited.
↑ Amy Morin (14-3-2017), “10 Ways to Build Your Mental Strength”، www.success.com, Retrieved 21-1-2018. Edited.
Alice G. Walton, “Recovering Resilience: 7 Methods For Becoming Mentally Stronger”، www.forbes.com, Retrieved 21-1-2018. Edited.