Sometimes a run feels hard from the start—maybe you didn't sleep well the night before or you've had a stressful day at work. Other times, the difficulty sneaks up on you. Things started out okay, but now you're barely halfway through and are already ready to call it quits. Sound familiar? We've all been there. The next time you're having a less than awesome run, call on one of these tried and true strategies, and there's a good chance you'll make it to the finish.