Reality Check: Do you believe this is true?
"You can have anything you want if you are willing to give up the belief that you can’t have it." ~Robert Anthony
For me, it's time to try harder every day. I've always believed having a positive attitude is important, but had trouble focusing on results and deadlines. For you, do you believe you can have literally anything you want, starting with a positive attitude?
"You can have
anything" could mean there is no limit to things you can have, but this isn't true without relying on the CREATOR of the Universe who is the source of anything in existence and can give it to those who rely on him. Your belief has to based on the truth that the CREATOR can give you anything good you ask, if you deserve it.
People are heavily limited on their own... being positive without relying on the CREATOR won't remove the limit.. Better still, humans don't have the power to do or have anything they want on their own. It comes from the CREATOR. If you able to have or do something "great" it could be the limit of what you can have or do. That doesn't mean you can go beyond your limit to have or do something greater. But with the CREATOR, the limit (depending on your faith) is removed.