I am worthy of good health.

Worthiness sounds abstract until you look at a calendar. There's the appointment you've moved four times. The scan you keep meaning to book. The physio exercises you would absolutely nag a friend into doing.

People rarely say out loud that they don't deserve care. They just quietly rank themselves last on a list they wrote themselves, then act surprised at the position.

Deserving isn't earned by being good, productive, or thin. If it were, it could be lost, and a thing that can be lost is a wage rather than a right. Book the appointment. Not as a reward, but as the ordinary consequence of the fact that you live in there.