freewheel through life

Translations
ехать по жизни на свободном ходу
He tends to freewheel through life without worrying about the consequences.
Он склонен ехать по жизни на свободном ходу, не беспокоясь о последствиях.
Definitions
To move through life in a relaxed, carefree, or unconcerned manner, often without planning or worrying about responsibilities or consequences.