This morning

Hello people on italki, greetings to you !
I havent written something here for a long time. Hmm,today I want to say something.

This morning when I was on the way to work, I was nearly hit by a taxi.  It scared me.  After that I felt lucky that I was still alive and didnt get hurt.

i realized that our lives are fragile.  We can lose them easily. Never do we take care of ourselves until we are sick, never do we pay attention to our lives until we might lose them.

Please everybody, take care and enjoy life!
Thanks.

error better [suggestion] notes

this morning

Hello people on italki, give greetings to you ! (give is implied in greetings)
I havn't written something here for a long time.
hmm, today i want to say something.
this morning ,when I was on the way to work , I was nearly hurt by a taxi. It scared me. After that I felt lucky I was still alive and ddnt get wounded. I realized that our lives are (life, singular -> is, lives, plural -> are) fragile. We can lose them easily. (them because your subject is "lives", plural)

never do we take care of yourself until you are sick. wrong mix of plural and singuar.

never do we take care of ourselves until we are sick. (plural)
never do you take care of yourself until you are sick. (singluar)

Never do we pay attention to our lives until we going to lose them. 

Please everybody take care and enjoy life !
thanks.

Notes:

"I" referring to yourself is always capital "I" and never lower case "i".
Avoid slang in written english, and always start sentences with capital letters.
Spaces after comma's (,) and full stops (.) and never before them.