What's one VFX skill that became far more important than you expected?

I've noticed that some skills get a lot of attention when people are learning VFX, while others turn out to be much more valuable in real-world work than expected.

For those working in the industry, what skill ended up being more important than you originally thought? It could be technical, artistic, communication-related, or something else entirely.

I'm curious to hear different perspectives from artists across various specialties.