Self-doubt is a normal part of the programming process. It's like the static in your editor - always there, always bothering you, but never really accomplishing anything. So, what should you learn today?
Don't worry, we won't make you do any actual math. Just learn the difference between a for loop and a while loop. It's like the difference between a hammer and a screwdriver - both are useful, but one is definitely more useful than the other.
Take it to the Next Level But First, Design a Toilet