One of the fundamental truths we have learnt through the Prophets aliahim assalam is that whatever is taking place in the world and everything that is reaching us or not, is from Allah, and by His leave. The cause which, apparently, bring about a result are simply, the ways and means, decreed by the Lord Himself.
To put one's trust in Allah, to be steadfast in one's loyalty towards Him, to keep one's eye set upon His Power and Beneficence, to make Him the centre of one's hops and fears, and to supplicate to Him for one's needs, with a complete faith in the reality, is Tawakkul.
Therefore, a believer should pay the fullest regard to the good pleasure of Allah and His commandments while making use of worldly means and resources, and believed that the Divine Will and Power was not bound by the causes, and Allah could do anything without or outside of them. Allah has said:
"And whoever puts his trust in Allah, He will suffice him." (At-Talaq 65:3)
A believer should always beseech Allah to decide what is good for him in His judgement. The Messenger of Allah sallallahu alaihi wassallam, has said that it was the height of misfortune for a man not to entreat Allah for prosperity and welfare. In the same way, it is most lamentable for a believer to feel sore and unhappy over what the Almighty decides or prefers for him.
The state of wholehearted submission to the Divine Will be attained only when a believer has a complete faith in Divine Attributes, as mentioned in the Qura'n, and the love of Allah pervades his heart and takes hold of it as a result of this belief and conviction.