Do you think optimism and being positive even if you fail, and start again, and fail will make you succeed? –@catalin357
This is a trick question because the answer is both yes and no.
You need “rational optimism.” If I say to myself, “damn, I failed to make that time travel machine but I’m optimistic my next try will be it!” then I’m doomed to fail.
How do you be a rational optimist?
Be realistic. It’s like the question where I describe coming up with ideas. Make sure you have realistic ideas, make sure you have a concrete next step, make sure you have an idea in your mind how you can get your first customers and users. If you can get a commitment for a customer even before you build, then that is the best scenario.
Understand that some things are out of your control. Having a sense of surrender, “okay, I did all I could. It’s in your hands now” will help you to have an optimistic, flexible, and persistent outlook on life. If you just say, “Ugh, I did everything I could and I failed and now that’s it” then of course, that’s it!
Who is the you in “it’s in your hands now.” It might be your own creativity and flexibility that wants to get out and help you on your next idea. That creativity is a sleeping monster and it never gets smaller if you keep feeding it, nurturing it, loving it, taking care of it. Persistence in developing that creativity will make you better at execution, better at idea generation, and more optimistic (simply because over time you will be more confident that you can always awaken it). Creativity becomes your loving friend instead of your enemy. And optimism, creativity, and persistence are all close siblings that want to play together as much as possible.