Sayyiduna Rasulullah (Peace and blessings be upon him) advised us: "Be conscious of Allah wherever you may be. Follow up a misdeed with a good deed and you will obliterate the misdeed. Furthermore, interact with people by practicing beautiful conduct" (Al-Bukhari and others).
Imam Shafi`i said: "3 things in this world have been made lovely to me: avoiding affectation, treating people kindly, and following the way of tasawwuf.
He also said: I accompanied the Sufis and received from them naught but three expressions: their statement that time is a sword: if you do not cut it, it cuts you; their statement that if you do not keep your ego busy with truth it will keep you busy with falsehood; and their statement that deprivation is immunity".