“I can’t do this”
“I can’t understand”
“I can’t figure out how”
“I can’t decide”
Each time you find yourself saying “I can’t”, remind yourself that you can.
It is not a capability issue. It is an intent issue.
You can.
You just chose not to.
So the next time you say, “I can’t do this”, replace it with “I can do this. I just chose not to”
And see how that sounds.