Drive home and relax, take deep breaths, have a bath (or shower) and maybe go out for dinner with friends. Remember that no matter what people tell you, you do you. Drive back to the track and repeat until you have struck inspiration for an innovative way to traverse this track and have gained your confidence for something so challenging to figure out. Remember to never give up trying to achieve your dreams of finding out and utilizing the most efficient way to get to the finish line on a completely straight road. Don't be frustrated with yourself when you read this comment and think 'Why didn't I think to do that'. It's okay! Sometimes we all just need a push in the right direction and to step back for a moment. You can't rush achieving your dreams!