Everyone fails sometimes. Take every failure as a learning experience. Taking it personally and feeling emotions doesn’t actually help the problem - that you made a mistake and need to just learn and move on. Focus on the future, on the problem, on now, not the past. If however you make a mistake and get defensive and don’t learn anything then yeah it’s only a toxic thing on you. Learning from it helps you grow.

Masters of subjects don’t learn overnight. They learn over years, decades, a lifetime. In that time they make countless mistakes. But they persevere and don’t let it affect them emotionally and they grow into those masters.

I make mistakes daily. I’ve thrown away hundreds of thousands of lines of code in my career because it didn’t work as expected. But each time I grew a little and learned something to make the next iteration better.