Yup dude it is difficult but I agree, the improvement in my breathing made a huge difference. The two hikes I couldn't do when I was smoking I completed more than once. I have hiked to South Willow lake now probably four times and Lake Blanche twice. Both times I hiked to Lake Blanche I was rewarded with photographs of moose. It is so worth the work to completely quit. You keep working on it. You have a huge cheering squad here for you. e