You should have self-esteem before you do anything, including studying English or reading

English books. If you have lower self-esteem, try to improve it in any way possible. 

You have to have a confidence in yourself and be satisfied with yourself. If you have not been 

confident and satisified with yourself, you have to have at least good opinions about yourself

even if you're in a miserable situation. You have to thankful just to be yourself.

Which is better, staying in your low self-esteem or just being satisfied with yourself?

Even if you have failed at school, work or at home, building your self-esteem first is

the most important and urgent thing to do.

Somebody gave me a comment saying that 'I'm doing a mental masturbation'. Yes, just building

the self-esteem is a bit similar to doing masturbation in terms of something that could make

you feel good. Feeling good about yourself is very important in learning anything. 

Only when you're feeling good, your studying or learning efficiency will be closer to 100%.

Keep this in mind and have a nice weekend!