Pulse is usually high due to exersice just before taking. If resting, there is a problem, may be due to high blood pressure, which is a result of too much salt in diet, being overweight, etc. You may need to change diet and exerercise more. There may also be some medications available to help lower cholesterol as this too is a factor
Your pulse rate was high because your heart has to pump harder and faster to get your blood through arteries that are probably clogged. Which is not a good thing it can lead to stroke and heart attack.