How to stop kid from disobey

Hi parents. My child is 30 month old kid tend to have 0 awareness. LO will keep laughing and think is funny even we say "no, stop, dont do that" will keep repeating doing what was told not to do until i flare up so badly e.g. I have to Scream my lung out to get LO stop. Often (everytime) i got guilt tripped after screaming but that tend to be the only way to stop my LO from doing something . E.g. When shower LO will keep close the lever and laugh it off. Many times Frastruated kick in which is wrong but i couldnt control esp whe i say stop 3rd warning was alr give to LO. #advicepls #1stimemom #theasianparent_thailand