If others have made it without getting a mentor, then what’s the difference if you also don’t get any? Success can be learned and develop, a working process wherein you need to prove your own worth and dedication so you can be valuable in the end. And when it happens, there’s no reason why success can’t be guaranteed. You just have to do your own right thing, even without someone that will lead you.
Yes, that can be expected, we only need to be confident in the abilities that we have, because many people start from the beginning and they become successful, even without a mentor or assistance from the beginning, depending on how strong our intentions and determination are, that's what determines it, even though each person's beliefs are different in order to achieve the progress they want to achieve, but all need a process of time to change everything.