In your mind you are telling yourself "it is going to be extremely difficult". Why is that? Try to change your self-talk. "I can do this as long as I keep trying" and "I am in complete control of myself".
Small changes. Baby steps. Count how many times you smoke a day and then reduce it by one. Once you are consistent, reduce it again. Take as long as you need, just make sure you are always improving.
Consider introducing some cardiovascular exercise also. Running etc. Something that will motivate you to quit in order to have more lung capacity. Again, small small steps. Don't try to gung ho it.
As long as you are always willing to keep pressing forward, you can do it. If something appears to be exremely difficult, break it down into much smaller more manageable steps, and then just shoot for the first one.
Spellfire aka Mike
"Women do not like controlling men. They respect and are attracted to men who control themselves. They ultimately are repelled by men who allow themselves to be controlled." -S&A