That's the way to look at it in these early days Shanakor - 1 day, 1 hour or even 1 minute at a time to manage your cravings to smoke. Don't think about what will be happening or how you will be feeling a week or a month from now. That will take care of itself and you, like everyone else, will be feeling a lot better down the road providing you don't smoke. You have already developed a useful tool for yourself to manage those cravings (your timer) and that's a good thing. Plus, you are coming here for support and information - also a good thing. The early part of quitting can be a real roller coaster because you are up one day and down the next sometimes. That will smooth out the longer you stay quit. That inability to focus or concentrate is also very normal in the early quit. Some call it "brain fog". That too will clear for you at some point. That anxious feeling you probably have will also go away in time as your brain rewires itself to life as a non-smoker.
As you're finding out, there's no magic pill to just avoid all the unpleasant symptoms of quitting smoking. You have to just go through all these things to get out the other side and be truly free of this horrible addiction. So you just hang in there Shanakor and do the hard work that's required to get this thing done! We're routing for ya :)