I think that we are alive for one purpose. We can't live our life's by ourself. The life is a soil, we're gardeners and our actions make one seed growing and turning in a flower. All action, have one re-action. We need to let something in this world, something good, making the world better.
For me, the key to success is "to believe". And there are many people that made some difference in my life.
First of all, I consider the first priority for us to discuss this topic is to ensure the definition of success then we can expect to stand on the same line to explore. I speculate there are a bunch of definitions about SUCCESS in the world and there is no universal standard to measure what the real success is but yourself.
Accordingly, I would like to define success on my own which is "self actualization, fulfillment". In this case, only I self can define my success and I consider the key to success is "flexibility", nothing more.
Thanks for your question to remind to think as I am here.
Persistence and the ability to deal with "failure"/setbacks. I can think of many people who I would consider mentors but I seem to be much more motivated by someone telling me I can't do something than people who are supportive.
"Failure is either giving up or being content too soon."
It´s nice to see this kind of thinking, because we all have to be believers, it´s important to have goals no matter if they are extremely difficult because if you really want to achieve something you will work hard to achieve it. In my opinion every single person has goals and dreams but the problem is that they lost focus, there are several things that make us lost focus for example bad or negative friends, the society in general... But if you never lost focus is probably that you can achieve what you want, and if you don´t achieve it you will learn a lot in the journey and maybe in the journey you create others goals and dreams and it continues until we die. That the beautiful thing in people and because of dreams and goals is that humanity has accomplished all things like technology and science, because those "genius people" made mistakes too but they didn´t give up and now it our turn to change this world action by action.
For example: learn other languages make us take big steps because if we can communicate with people of other countries we can share knowledge and experiences and that make us smarter.
There are a myriad of people who wish to succeed, but most of them have no idea what success is and what they would pay by reaching for success. I guess that is why so many people are working all day long and cannot get success in happiness, instead they are often trapped in misery without good return by their dedication.
No one would deny a good success is worthy to go after but the problem is how many people ask themselves if the fruit is sweet enough for them to sacrifice more valuables to achieve. "No pain, no gain" is a well-known old saying taught by our parents since we were very young, yet people have to experience its veracity when they enter society to face the reality.
Apparently, there is no profound theory or fancy myths in the course of chasing success and you can look at those so-called successful experience shared by mostly weathy people on TV or news. You are probably apt to be possessed in their success, but can they give you any clue that such a success can befall you? It is virtually impossible to see that similarity, good fortune could happen to you given that everyone has his unique success formula hardly to be imitated by another person.
On the whole, you had better investigate yourself if you are really approaching the route to success that is definitely wished in the depth of your heart and once you have identified, just go ahead for it with efforts without hesitation.