Don't be greedy for cheap things. Buy good quality things.
To invest in yourself, you can go to a tutorial class and cultivate your interest.
When you buy books, you need to know how to read them to increase your knowledge.
It's not good for your health to eat less takeout and snacks.
Don't buy clothes blindly. Choose more clothes you can wear.
To learn to return and bargain, be cheeky and don't feel embarrassed.