I find that doubt never really goes away, even as you get better and even as you find success. So instead I embrace it and act anyway.
A lot of my doubt is centered on the Imposter syndrome, that overwhelming feeling that I'm getting away with something and at any moment I'll be found out ahah.
But you see, creating stories and sharing them requires a lot of courage. But courage I believe only manifests after you've felt doubt. Because courage is the ability to act even when one is fearful and doubt is a form of fear.
I cannot say I have a specific strategy. Typically I just solve my issues with one answer: Action.
There is power in taking action.
Feel like you don't understand how to make a plot? Google the best resources for how to write compelling plot and study. That's taking action.
We never ever know what the future holds. I recently read an old journal entry of mine that stated: Its been two months. I'm now fairly certain I wasn't chosen for the Tapas Incubator. So I'm just going to focus completely on working on my next comic project.
This was a week before I got the email that I had, actually, been chosen.
Sometimes things go wrong and they will go wrong, but you can always act in response to it. There is always a choice to be made.
Now you cannot control the readers, except one. You are your first reader. You are your audience too! Do you enjoy the story? Do you read it and like it as a reader?
Allowing the audience to determine your emotional state can be paralyzing. But in reality, what they do and how they think or feel is not in our control. How we choose to react is always in our control.
As a creator I strive to bond with the audience over some aspect of humanity through storytelling. It's a high risk - high reward endeavor for sure xD.
Right this moment I'm still gripped with the idea that maybe Tapas made a mistake. Maybe Swaha won't get a huge reaction and sway people's hearts through the drama of its story. Maybe it wont. Maybe it will. But I cannot control that.
So I act on what I can control. The next scene, the next panel. There's still work to be done and story to be told. And I enjoy my work a lot xD. So if no one else does, well at least I still have the work.
Doubt and courage can live side by side. Doubt can be useful so I'd never want it to go away or eliminate it. Absolute certainty is kinda dangerous. It does not leave room for the natural 'it could or it couldn't happen' that always exists cause the future is wholly unknown.