Yes..the Quran and the Sunnah of our Prophet is all we have to abide by and Inshallah we will find success. But of course we will also be tested in which case we need to be patient and do what's right.Allah is with the patient. Sadly today people are very impatient and want instant remedies which is not always possible. Even giving advice, dawah, to another requires certain manners and methods and patience which many are lacking badly. In such cases ones advices do more damage than harm,Allahu Must3aan!