If you describe a particular activity as a way of life for someone, you mean that it has become a very important and regular thing in their life, rather than something they do or experience occasionally. She likes it so much it's become a way of life for her
A way of life is the behaviour and habits that are typical of a particular person or group, or that are chosen by them. Mining activities have totally disrupted the traditional way of life of the Yanomami Indians
a course of conduct; "the path of virtue"; "we went our separate ways"; "our paths in life led us apart"; "genius usually follows a revolutionary path"