what is your tool?

These days, I am puzzled by so many things. I want to learn optimization, programming language, operating systems, and so on.

 

But I have not enough time, and enough energy. I feel tired very much for 10hrs work. I think that is a problem. 

 

I want to be a guy, or a woman who is good at sth esp, not rely on her husband or on anybody else.

 

 

 

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