The best advice I received in my childhood was from my dad. He always gives me some advice, but

The best advice I received in my childhood was from my dad. He always gives me some advice, but

第一行：gives改成gave
第二行：took them改成took it，he was去掉was
第三行：after改成before, full改成fully
第四行：such改成so
第五行：lose改成losing，like后面加a
第六行：many time改成many times, thanks for改成thanks to

◆嗯，你写得相当不错，意思明确，造句通顺，只有一点点用词和语态上应小修一下：
The best advice I received in my childhood was from my dad. He always gives me some advice, but I seldom took them seriously. One day he 【was 】-去掉，不能用被动语态，不能说他【被鼓励我】encouraged me to participate in a speech competition. So I signed up and after the competition, I did my best to be full prepared. But the moment I stood on the stage, I was such nervous that my mind completely went blank.
The experience of lose a competition was really painful. Then, my dad said, “My son, life is like battlefield. You have to 【lose】-这个词应该换成花费spend，即不是你应该【损失】很多时间而是你应该【花费】很多时间。 many time to win the final victory.” Thanks for his advice, I never give up when I do anything.

was encouraged改为encouraged
to be full prepared改为to be fully prepared
such nervous改为so nervous
lose a competition改为losing a competition
battlefield改为a battlefield