You need boredom. A lot of it. Start by going on walks without music. No stimulation. No distractions of any kind. If you learn to sit with your own thoughts, for long enough, in time they will start serving you. You'll start having ideas once again. You'll start developing an extreme sense of clarity that will shift you into the next stage of your life. All by being bored, which is pretty insane.
To burn out is better than to fade away. Better to be consumed by passion than by regret.
Apply yourself. Commit fully. Leave little of your potential unexplored.
Not every pursuit will succeed, but few things are more tragic than a life spent wondering what might have been.