i climbed the highest hill in Shanghai yesterday, although it is only 100 meters. But when i went there and saw the environment which is full of gree trees , flowers and lawn. i breathed fresh air deeply. i walked a long way and reached at the foot of hill. the hill is big but low. so i began to climb. Along the stairs that was easy to go to the top of hill. but when i went there and overlooked faraway distant i felt a kind of strength and courage, so i shouted toward my front.that is the best way to released your pressure. when i went down the hill, i felt relaxed and happy. so if you have that problem you had better go out and find a hill to climb.