Reframe sleep as something that is productive. You should be aiming for at least 7 to 9 hours of sleep per night, and for those doing intense physical activity, 10 hours is not too much. The best way to figure out the right amount of sleep for you is to spend 10 to 14 days going to sleep when you are tired and waking up without an alarm clock. Take the average sleep time; that's what you need.
There's a lot you can do to set yourself up for better sleep, such as ensuring you're exposed to natural (i.e., non-electric) light throughout the day, exercising (but not too close to bedtime), limiting caffeine intake, using your bed only for sleep and sex, and keeping your smartphone OUT of the bedroom entirely.