Do you know good and well?

N:  I write good.

Y:  I write well.

Note also that doing well and doing good are both happy things, and they mean differently.

"I'm doing well" means I'm feeling physically well, being adequately successful at whatever, and so on.   Other examples:  "She's doing well in chemistry."  "My auntie is out of the hospital now and doing well."

 "I'm doing good" means I'm performing positive actions.  Other examples:  "Rotary does much good with its water and sanitation projects." "My grandma did good for many people."

And for fun, look at the Good and Well Duo, here:

https://www.youtube.com/watch?v=dIq2LLLlk0M