My SO. He was never a huge consumer of physical goods anyway, but he never thought much about spending for experiences, even if they were experiences he didn't care for (as in, going out to pubs with his buddies). He still goes out occasionnaly, but he much prefers to have some microbrew beer at home with his boys - bonus, doesn't need to drive. Also, he rides his bike to work now, and we both bike or longboard to the store or anywhere we need to go whenever there is no snow. I also taught him to look at prices during grocery shopping (he didn't before). His financial «vice» is still buying sports and outdoor equipment. Do we really need 3 surfboards, 2 pairs of skis, 3 snowboards, and 6... I shit you not... 6 skateboards? Probably not, but they're mostly all bought used, so hey, pick your battles, right?
Also, his money used to sit in the bank. I got him to max out his TFSA and invest in low-cost funds. I still haven't convinced him to rebalance on a regular basis, but I'm working on it.