Low Cholesterol and low fat diet prevents Angina Pectoris.

Avoid smoking and tobacco, have healthy diet with more vegetables and fruits, and do regular exercises

First, you should avoid any activities and habits which will possibly induce the angina pectoris.

For example, to avoid the excited mood, the hypertension or overtired; to avoid walking fast, running; do not chase after the bus; to avoid the cold wind blowing in the front; wear mask in the cold season, keep warm and control the diet; do not overeat, especially eatting the supper less is suitable; and avoid by all means overeat and overdrink. Drink little wine or not drink, do not smoke. Drink little strong tea or coffee. The life must be regular. Pay attention to alternate work with rest; play little mahjong as far as possible. It is not suitable to focus highly on work, too long. Usually the mood need keep good. Perfom suitably setting-up exercises to music, practise taijiquan, train qigong and so on exercise. Do not watch ball sports or thrilling films and television plays.

And then, select the medicine correctly under the instruction from doctors, and insist to take pills

Source: http://www.heart-problems.net/angina_cordis/How_to_prevent_the_angina_pectoris_outbreak_44.html