These two doubts are by no means certainty, but your thoughts also seem to indicate that it is possible to be certain of oneself, despite all doubts.

Thank you! I don't doubt easily, rather I trust easily...

But there is no role I found harder than being that of a mother. A mother's brain can work in all mysterious ways...

When doubts turn into generalised mistrust, there is imminent danger: I see that as a serious psychological crisis...

10000000 percent