Dear, you may be knowing that if we help others we are getting happiness and sound health. Our forefathers were believing in sacrifice (extending any type of help) leads towards real happiness. Moreover "Helping" boosts our health as well as builds our self confidence. Helping others rewards ourselves when we get feedback of "THANK YOU VERY MUCH" If you are always considerate, think that it will reduce your stress and strain levels of your daily business. If you want to be tougher by mentally and stronger by physically there is no better way than any other only extending your help. I have been feeling the same since my childhood and also experienced hundred and thousand times.Animals also share their extra food to other fellowmates to continue their unity and affection.