How do I deal with the fear that an injury could end my career?

You worked your whole life to get here, and now that you have arrived, the fear of losing it in a single moment follows you. That makes sense. When something matters this much, the thought of it ending is heavy. But notice what the fear is really telling you: you love this, and you know it will not last forever. No one gets a promise that the next game is safe. Injury, age, luck, some of it was never in your hands and never will be. Spending today afraid of a tomorrow you cannot control only robs you of the thing you fought for. The play in front of you is the only one you actually own. So let the fear make you wise, not frozen. Train smart, care for your body, prepare well, that is your part. Then step onto the field and be fully there, because being present is the one thing injury cannot take in advance. One step: before your next session, take a slow breath and remind yourself you are here now, and now is enough.