There's nothing wrong with having doubts. I feel it's actually immature starting a company without considering all the options. You're just being delusional then.
There's a clear difference between carefully considering all the options vs having doubts. No one said anything about not thinking through various options and making intelligent decisions.
That said, I personally don't think there should be any doubts. It's like working with a cofounder. There are a lot of things to consider, potential issues that may arise, but regardless of what happens, doubts should not arise between you two. In the same sense, you carefully weigh your options and only YOU know yourself best. If you have doubts, you aren't ready because jumping on an idea to pursue it full force can take a lot out of you.
You're free to disagree but calling the advice of a long time and successful entrepreneur that many people respect and admire immature is an insult. To which I say believe what you want.
That said, I personally don't think there should be any doubts. It's like working with a cofounder. There are a lot of things to consider, potential issues that may arise, but regardless of what happens, doubts should not arise between you two. In the same sense, you carefully weigh your options and only YOU know yourself best. If you have doubts, you aren't ready because jumping on an idea to pursue it full force can take a lot out of you.
You're free to disagree but calling the advice of a long time and successful entrepreneur that many people respect and admire immature is an insult. To which I say believe what you want.