"Lifelong passion" refers to an intense and long-lasting love or interest that someone has for a particular activity or subject throughout their entire life. Full definition
Education is, of course, vital to expanding people's horizons and developing lifelong passions. (gov.uk)
Natalie's work and lifelong passion involve styling the stars including musicians and various other talents for the red carpet, as well as personal styling. (blog.feedspot.com)
Sean and Suzanne hold lifelong passions for cooking. (fittous.com)