Anyone also suffers from desire to spend no money

So, today i had a call with one of my friends, he said that he is able to save a good amount of money from his monthly salary; lets say 60-70% of his salary gets saved every month. He further described me his wish to not spend money like he feels sad whenever he buys any kind of clothes, foods, or pays for the other kind expenses in general.

So, is this behaviour normal? If not then how to improve that?