You are better than you think you are; you can play at a higher level than you think you can; and you have the potential to beat so-called better players. If you’re a competitor and not just playing for exercise (and “cardio” tennis is great), don’t accept where you are; don’t settle for less. Shake yourself up in whatever manner it takes and you’ll get results. Like Murray and the Djoker you can turn things around and beat players who are beating you.