Once, a man requested Prophet Muhammad(Peace and Blessings of Allah be upon him) to advice him about the most important thing that he needs to be careful about. “Don't be angry" was the advice given by Prophet Muhammad (PBH). Prophet of Allah was repeating the same advice while he asked the same question repeatedly.

Prophet Muhammad (PBH) has once proclaimed: “The powerful man is one who is able to suppress himself when he is in a fit of rage" (Bukhari and Muslim). It is obvious that the consequences of anger will be some time dangerous too. The anger will occasionally cause to break up the friendship or family relations, or to bring about some troubles and even to end in tragedies.

The ability to suppress one's anger is his patience and tolerance. Prophet Muhammad (S) has mentioned that the tolerance is regarded to be a holy rite in Islam because it is of vital importance in a successful social life. Prophet (PBH) teaches the importance of patience and tolerance through the following Hadîth: “Some people from among the Ansar group begged from the Messenger of Allah (peace be upon him) and he gave them too. They again begged and he again gave them everything they asked, till what was in his possession; and then he said: Whatever good (riches, goods) I have, I will not withhold it from you. He who refrains from begging Allah safeguards him against wants. And he who seeks sufficiency, Allah would keep him in a state of sufficiency; and he who shows endurance, Allah would grant him power to endure; and none is blessed with an endowment better and greater than endurance" ( Bukhari and Muslim).

One of the best characters of a typical Muslim is the ability to keep patience towards other people when he gets angry at them or he suffers from their annoyance. Kindness is another quality of a good person which comes from tolerance. One can tolerate only if he is kind enough. Some holy Hadîth signify that both kindness and tolerance are closely related characters. Let's see some Hadîth.
“Verily Allah is kind and He loves kindness in every matter" (Bukhari and Muslim).
“Verily Allah is kind and He loves kindness and confers upon kindness which he does not confer upon severity and does not confer upon anything else besides it (kindness)" (Muslim). “Kindness is not to be found in anything but that it adds to its beauty and it is not withdrawn from anything but it makes it defective" (Muslim)".

These holy words of Prophet Muhammad (S) would be helpful to encourage successful family relations in social life. Prophet Muhammad (S) mentions very clearly:
“Give glad tidings to the people; do not create (in their minds) aversion; show them leniency and do not be hard upon them" (Bukhari and Muslim).
“He who is deprived of kindness is in fact deprived of good" (Muslim).

It is very obvious from this Hadîth that even good people would often regarded to be bad if they are not kind. Prophet Muhammad (S) has taught us that both tolerance and kindness are essential characters of a Muslim to pave him the way to the paradise.
“Ibnu Masud reported Prophet Muhammad (S) as saying: May I inform you about those who are deprived of the hell, or the hell is deprived of them? The hell is deprived of those who are close, tolerable, kind and mild to others" (Thurmudi).
All the abovementioned holy Hadîth teach us in general about good qualities like kindness, patience, and mildness as essential for a successful social life.