Patience
Desire continuously keeps attempting to overtake the self. It tries to dominate the self during the bad times as well as during the good times. In a hardship, desire tends to grow a retaliation feeling (hatred) and in an easiness, it attracts to nurture the delusive ego (arrogance and selfishness).
Patience neutralizes the desire. Through patience, a hardship is taken as a way to build up the emotional strength by seeking help to Allah. Patience accepts an easiness as a way to be grateful to Allah.
Perpetual remembrance to Allah (shalat & dzikr) increases the patience capability. Remembrance to Allah and patience develop each other adjacency.
Patience gets the self closer to Allah, The Love, at anytime.