When I first started smoking, it was hugely beneficial. I grew up in a high-stress environment, and while art and philosophy helped me cope on an intellectual level, it wasn't until I started smoking that I believed in a physical way many of the things I understood intellectually. When I had to quit for a couple months, it was very difficult, though, because I was still very much a work in progress. I recently quit again (temporarily) for a little over a month, and it's been much, much easier. I was worried that I might be psychologically dependent, because I smoked pretty much every day, and while I felt great, and am generally very happy, I was concerned that sense of well-being would go away when I quit again. Thankfully, I don't really miss it overall, and I feel great - just like when I was smoking regularly (same but different). I do miss it at specific times for specific activities, though.