​Does anyone else find it difficult to write?

I’ve been a writer for years. I love it and it’s been the sole drive for me for a very long time, However, the past while, it’s been extremely difficult for me to write; I’m not sure if it’s self criticism or writer’s block, but whenever I try to continue a scene, it feels like pulling teeth in order for me to get something out.

It’s extremely difficult because I want to write, but I feel like I can’t. It takes 30 minutes just for me to get ~300 words down. It could be my mental health, as I’ve had very poor mental health for a while in spite of medication, but I’m not entirely sure. Do I need to practice more? Does anyone else feel this way?