Have you ever considered that maybe nihilism shouldn't be seen as a problem and instead accepted as the default state of individuals from birth..?
I think self-Identity and experiences eventually develop the individual beyond that state.. Nevermind.. It was just a useless thought. Someone else will have something much better and directly impactful for you. I hope you feel better.
Don't combat it. Embrace it. If nothing else it can free you from worry. Worrying about the consequences is usually what stops you doing anything. And most of all do what you enjoy.