At some point in everyone's life, a challenge will present itself, an obstacle will arise. These may seem, and indeed may be, insurmountable, but must be faced none the less.
Notice the body language in our protagonist. The slumped shoulders indicate a "weight of the world" weariness, but there is no retreat. He has committed himself to the fight, and where there is a will to survive, there is hope (blue skies).
The package at his feet is meant to represent everyone's individual talent, skill, aptitude. How we use these talents, often dictate how we respond to and deal with adversity.