Contentment empties the heart of all superfluous carriage, thus leaving it entirely for Allah.
Whatever has befallen you was not meant to escape you, and whatever has escaped you was not meant to befall you.
Determination is the fuel that propels one to higher virtues.
If Allah has written for you happiness, no one can steal that from you, and if He has written for your heart to break, then no-one can mend it but He, so always put your trust in Allah.