The tar with the lemonade

The clock ticks as the hands turn,
Moving faster when you are without concern,
The days flying past, each one going by so fast,
These times of joy are unsurpassed.

Times of happiness are not unending,
Always something sorrowful is pending,
During days of despair time seems to slow,
Moving with malevolent laziness and woe.

Though it may seem an unfair trade,
We must take the good times with the bad,
The tar with the lemonade.