I don't know about earphones, I would stay away from those, but the amount of headphone stigmatization on TT is pretty huge.
No, your dream is not over because of T. Yes, it may require adjustments so that you can avoid potential worsenings. To start off, try to lay off either for a few months, give your ears a rest and a chance to recover. Afterwards, consult an Audiologist or a Hearing Therapist for their advice on whether you should or not use headphones, and how to go about it.
There are certain people on the forum that will tell you that headphones are going to swallow up your ears and drown you in Tinnitus, and there are those that have used headphones and had no response in their T either way. I've not been around long enough to know the exact implications of this, but don't let anyone crush your dreams. Health will deteriorate whether you like it or not, but the only regret you should have is for the opportunities missed, not for the opportunities taken gone sour.
For the rest of you, I'm not really one to say these things, but I feel like I have to speak out. It's really disappointing how easily you dismiss a man's dream. Remember that, for some people, a life where they believe they can't achieve their dream anymore is often not a life worth living. Sometimes, it can be a worse killer than T itself.
To OP, take it easy and don't panic. There are steps to be taken, and it won't be easy, but your T is your own personal journey, and as long as you don't give up, you will be able to find a way to achieve your dreams, health problems or not.