The Ghost of Christmas Past

The Ghost of Christmas Past is the first of the 3 spirits that haunt Ebenezer Scrooge in A Christmas Carol. He is voiced by Jim Carrey, who also voices Scrooge, The Ghost of Christmas Present, and The Ghost of Christmas Yet To Come.

Design
The Ghost of Christmas Past was designed to look like a candle to symbolize the light that people shine on their past, in order to know themselves better.

Journey
The ghost takes Scrooge on a journey throughout his past in order to show Scrooge how he became the miserly moneylender he is. During this journey Scrooge discovered the following things

His father neglected him as a child.

His kind sister Fan brought him back home from boarding school only to die giving birth to Fred.

Fezziwig was a kind Christmas loving boss to him.

Scrooge started a sucessfull business in moneylending and finances.

He first met Belle (A Christmas Carol) during Fezziwig's Christmas party

He then broke up with Belle by the time Scrooge started his obsession with finances.

After seeing all this, Scrooge decides enough is enough and extinguishes the ghost with his own extinguisher. However Scrooge is then shot up into the sky, towards the moon, and falls about 50,000ft towards the ground.

Relationship to novel
Of all the adaptations of A Christmas Carol, this seems to be one of the only versions that portrays The Ghost of Christmas Past in the way that Charles Dickens wrote about him.