Breslin found success as the lead singer, guitarist, songwriter with pop band The Blizzards, as a co-writer and producer with XIX Entertainment and as a solo artist.

Born on 22 October 1980 in Dublin, Ireland[1] to father Enda, who was from Bundoran in County Donegal,[2] and mother Mandy, Breslin is the second youngest of five children,[3] including siblings Ronan, Laura, Julie and Andrea.

[12] In April 2020, Breslin followed up his previous podcast with another series focusing on mental wellbeing and meditation, this time exclusively for Spotify, called Wake Up / Wind Down (UK & IE).

In January 2014, Breslin announced putting his solo career as a recording artist on hold, with the intention to focus on his work as a judge on The Voice of Ireland and writing and producing music.

[23] Having experienced a severe panic attack on a live show taping during the first series of The Voice of Ireland, Breslin sought professional help and ultimately decided to manage his anxiety, by adopting a more active lifestyle.

He began training for a triathlon, in support of Lakelands Area Retreat & Cancer Centre (LARCC),[24] a foundation on which his mother serves as director.

[25] Breslin is also an ambassador for Cycle Against Suicide (CAS),[26] an organisation that seeks to raise awareness and bring support to those dealing with mental health issues.