Could you guys correct my mistakes?

How are you, my dear friend? I don't believe in my eyes. You replied me. Thank you so much for that. I am so moved to receive your email, too. And thank you for your compliment - Yes, I agree with you, because we are women (that's why we are beautiful).

You said that I am ambitious. Actually, I've never thought of high office and great power. I just concern about something that I really love. It's like my passion, like yours. Or it may be something difficult for me to achieve or overcome. Something challenges me. For instance, I thought I couldn't manage to learn to swim because it's the most difficult skill for me. I was afraid of water every time I went swimming, or just diving. After years, I eventually decided to overcome my fear and guess what? I could float on water and did a kind of breaststroke and I could take a breath while swimming. I even could manage to do that in just 3 days when we was staying at the guesthouse. It's easy for almost everyone, but not for me. It's a big success for me. hihiNow I think that someday I would manage to swim. I do believe that. Now you see I have NO ambition whatsoever. hihiBut if you said "I am hungry for knowledge", I would say 'Yes, indeed'.
-----Yes, I know that. I know life is so short. This makes me positive. I want to learn things new for I am aware that they change me every second or maybe I change them. I always think that I will never step into a river twice because water in the river changes the next second and so do I.I think that at this moment I am different from the last moment because I've just learned something from you. It's such a good sentence, "No man ever steps into the same river twice".

------Thank you for reading. I do hope to see you again. Take care!

Your dear friend.