Whether a person is successful or not can be boiled down to this question… successful people say they can handle it, unsuccessful people say they can’t. And this is where your word (I can/I can’t) will give you everything.
I have read about a man whose doctor told him that he had terminal cancer, and he should go home and take care of his things. The man went home, took care of his things. A week later he died.
Turns out he was healthy. He didn’t have terminal cancer, he didn’t have any cancer, any disease. He died because he said: I can’t handle it…