Prophet Muhammad, peace be upon him, said:
[FONT=Arial, Helvetica, sans-serif]"[FONT=Arial, Helvetica, sans-serif]A strong believer is better and dearer to Allah than a weak one, and both are good. Adhere to that which is beneficial for you. [/FONT]
[FONT=Arial, Helvetica, sans-serif]
[FONT=Arial, Helvetica, sans-serif]Keep asking Allah for help and do not refrain from it. (If you are afflicted in any way), do not say: 'If I had taken this or that step, it would have resulted into such and such,' but say only: 'Allah so determined and did as He willed.' The word 'if' opens the gates of satanic (thoughts)[/FONT][/FONT][FONT=Arial, Helvetica, sans-serif]"[/FONT][/FONT]
(Hadith in Sahih Muslim)