I have faith in my ability to overcome every obstacle that life throws at me.

Faith here isn't blind; there's a file behind it. There was a stretch you genuinely did not believe you would come out of — a diagnosis, a job ending badly, someone leaving. You are on the other side of it now, reading this.

You didn't overcome it heroically. You did it by getting up, handling the next required thing, and repeating that for longer than seemed reasonable at the time. That's the method, and it has already been field-tested. Whatever arrives next will meet the same unimpressive, effective approach.