It was tougher the first time I tried to quit, and I started up after a year or two that time. The second time (the one that stuck) I had more going in favor of quitting. More cardio (makes it very apparent what it is costing you), minor health scare (mouth was melting; ultimately a combination of factors including smoking,drinking very strong limeade, and using non sensitive toothpaste), and having first kid soon (don’t want to be smoking around my kids). Thankfully it stuck that second time. It sucks in the first several weeks, but it gets easier with time, and it helps the more reasons you have to not smoke