[1] Girish was born to Pulikkool Krishna Panicker and Meenakshi Amma in Puthenchery, near Ulliyeri village in the Kozhikode district of Kerala.

Initially, Girish aspired to become a singer, idolizing K. J. Yesudas, but eventually abandoned this dream to pursue a career as a songwriter.

After the unexpected death of his father, which left the family in financial hardship, Girish redoubled his efforts to establish himself as a lyricist.

These industry connections proved instrumental in helping him present his written songs, eventually paving the way for his success as a renowned lyricist In 1988, Girish was married to Beena, and they have two children, Jitin and Din Nath.

His younger son, Din Nath, also works as an assistant director and is a lyricist, having penned few songs for Malayalam films.

During this time, he continued to write songs and Lalitha Ganams for popular cassette recording companies, including Akashvani, HMV, Magnasounds, and Tharangini.

Girish wrote the lyrics and screenplay for Karote's movie Bhramarakashassu, but due to unforeseen circumstances, the film's initial release was delayed.

Ranjith's recommendation led to Girish's opportunity to write songs for director Jayaraj's movie Johnnie Walker, which became a breakthrough for him.

In addition to writing lyrics, Girish has written screenplays for several films, including Brahmarakshassu, Pallavur Devanarayanan, Vadakkumnadhan, Kinnaripuzhayoram, and the story for Meleparambil Aanveedu, Adivaram, Ikkareyanente Manasam, Oro Viliyum Kathorthu, and Kerala House Udan Vilpanakku.