If you have a fat body you may at a risk of diabetes, heart attacks and cancers. Therefore try to reduce extra fat. Reduce sugar and salt consumption as much as you can. Eat more fresh fruits, fresh vegetables, fresh leaves and grains.
Walk every day for good healthy life. People who are not doing exercises daily, will definitely subject to diseases. Walk rapidly about an hour per day. If you can walk for an hour per day, you do not need to bother about extra exercises.
Loneliness makes our mind ill. Therefore make relationships with relations and friends. Good relationships will develop you immune system. Make arrangements to reduce stress. Connect with a good hobby like travelling, music, horticulture, etc. Practice meditation, connect with good friends and people, decorating your home will also help to reduce the stress.
Helping people also a good thing to your healthy life. This must be only for heal your mind not for the popularity. The pleasure comes from helping others will live you a long life. Make a smile on your face every time. Loud laugh is a good thing for refresh.
Quit from single life. Make a good family with a good wife. Make children. If you felt with a disease your spouse will help you to recover.