Risk Normalisation

I started MTBing as an adult a few years back. At first, I was mega scared of anything slightly risky, I would always be visualising the worst thing that could go wrong.

Over time my bike handling and confidence has improved and I now find myself going pretty quick on stuff I would have walked down before. But still very much an XC novice in bike skills.

The other day, I clipped a tree on an easy section I've done many times before, and almost got launched off the bike.

Does anyone else find that familiarity creates more danger than new and challenging trails? And how do you stay mentally switched on when your brain has already decided a section is easy?