
A very, very familiar issue that I experience regularly. The why lies in the depths of your and my psyche, so let’s leave that aside for a while and concentrate on how to overcome this.
Imagine what it would be like if you were the person who is learning new math. How would your life be different? How would you be different? What would it feel like to be that person? Wake up in the morning and spend some time putting on the persona of somebody whose day is about learning new math. Brush teeth and have breakfast as that person. Make it part of your vocabulary by saying things like “as somebody who always learns new math…” Instead of imagining a future self who learns new math, start each day as if you already were that person.
The results won’t be instant. It will take some time but it’s worth it because you are trying to shed the inner belief that you don’t deserve too much enjoyment. It’s a big, serious issue that afflicts many people. It’s hard to overcome but absolutely not impossible.