Hope is the confident desire of attaining a difficult good in the future. Hope includes a willingness to engage in effort to overcome any obstacles to the goal.
The opposite of hope is despair.
Hope in Christianity
In Christian thought, hope is one of the three divine virtues identified by St Paul (along with faith and love). It should be noted that the original Greek word used by Paul can be translated both as "hope" and "expectation". Hope as a virtue means something stronger than a simple desire that something will happen: it also requires confidence or faith that it will come to pass (consider the phrase "sure and certain hope of the resurrection to eternal life" from the funeral liturgy).