The following quote from Runner’s World is wildly applicable. Whether you are training for a race, trying to land a better job or working to shed a few pounds.
Running is just you, the work you put in, and the clock. You can’t cheat yourself. If you don’t put in the miles, you can’t go to the starting line thinking you’re going to pull a miracle out of nowhere. You get out exactly as much as you put in.
Now go run!