Well, last weekend, I finished my first 10k -- 6.2 miles! (Actually, they messed up and it was actually 7.2 miles apparently!) Was it hard? Yes. Did I contemplate quitting during the training? A few times. But I didn't. And now I accomplished that goal, and I'm thinking about setting another, bigger one... like a half marathon. We'll see!
How many of us short-change ourselves, because we're afraid? Or don't think we can do it? Or use excuses to keep us from pushing ourselves? In the publishing world, there are going to be lots of ups and downs. (For most of us anyway.) You have to find the willpower and determination to push through the hard times, to not let your "bad knee" be the excuse that keeps you from becoming better, stronger, and accomplishing your goals. So much of anything in this life is mental--the power of our mind is immense. Believe you can, and you will. Continue to write and query and revise and write and query, and you will get that agent. (Even if it takes 2 and a half years like me!) Force yourself out of bed, push yourself on distance, on getting past the pain and exhaustion, and you'll finish that race.
I'm living proof!
Me, my aunt DiAnne, and my mom right after the race - the 10k girls! :)