I've once said it before that “Failure is a step away to success”. If we fail out on a project or anything and we choose not to try again, then we are not ready to write a success story.
To every successful person story(only in rare cases), there will always be some failed attempt which they failed to allow it bring them down. It's only a coward that will be scared of taking a step with the notion 'I don't want to fail'.
Life itself is a risk and if we are scared of taking risk, how do we get to the point of achieving what we desire? We just need to set it right and not take a reckless risk. Also, to every failed risk, we might need to restrategize and look out for what we are not doing right.
About the tree scenario that you used, we should not look down on others that are yet to succeed in their attempt just because they are failing, there failure is only building them up for the success ahead. With time, endurance and perseverance, story will change.
At different points of my life, I've taken some steps which I expected it to make way for me. Unfortunately, I see myself failing in them. It was a risk anyway, but I still never retired from forging ahead and I can say that I'm still on the right track despite the failed attempts.
Well, I learnt that failure should not be a stumbling block on my way to success. Whatever I have a positive mindset about, I should not be discouraged by anything whatsoever. My MINDSET is my greatest asset.
Thanks for this great post boss @starstrings01