The fact is that all the men and women have common ancestors, that is, Adam and Eve. This means that the whole world is a single family, and everyone has that kind of attachment with others that is so noticeable in family life.
It is only distance that makes you a stranger. If you eliminate the distance, nature will prevail, and all men and women will be like blood brothers and blood sisters to you. The formula for friendship is simple. If you are truly a friend to others, then you can safely predict that they will also become your friends. Develop genuine love for others in your heart and then others cannot but love you in return.
A philosopher once rightly said that man keeps radiating certain feelings all the time. If you are a compassionate person and you are radiating compassion, then others are bound to receive those radiations of compassion from you. If you have developed love for others, then you are radiating love and others are bound to receive the radiation of love. This is the law of nature. And the law of nature works unerringly in every situation. You will therefore receive a positive response to positive radiation and a negative response to negative radiation. The only condition in this regard is that you should be a selfless person. Positive behaviour combined with selflessness always works. It is selflessness that makes your behaviour ring true. On the contrary, if you are a selfish person, your behaviour will be like that of a salesman. And such behaviour cannot have any positive effect.
The formula for a successful life is simple: abide by your own nature and you will be a successful person. A philosopher once aptly remarked that everyone is born like an angel but, after receiving negative impulses from his environment, he becomes otherwise. So, return to your original nature and you will be acceptable to all.