how to be good parent?

Today Ryan has been very misbehaving. He purposely spilled his left over milk on the sofa and and the floor.... this is not the first time he did that. It has been lotsa times already. For the first few times i told him not to that and explain to him why he cannot do that.. but still he repeated it again and again.
TOday it got me soo mad coz the sofabed cover is a denim cover and rite now is winter time is very hard to wash and dry it. So, i exploded and scolded him and i even hit his hand. For that moment i didn't think rational that he will understand why i was scolding him and hitting him. But after doing that..i felt so badd and felt like a lousy mother.
After awhile..i talked to him and tell him why i scold him and hit him. It appears that he listened to me and he kinda felt sorrie for what he had done. I am not sure he really feels that or not...but the way his looks portrays to me..i am guessing he is getting it.

After few hours....it was time for bath. RIte after i bathed him ...he played the lotion on the table . He squeezed all the lotion on the table.
Again..i lost myself. I was soo tired with all the chores and he added more stuff for me to do. I know kids doesn't understand how tired we are n etc...but i really snaped out!
Again i scolded him ...and he looked soo shocked and sad.
It hurts me alot whenever i scolded him.
Deep inside my heart i know i should have explained to him first... but when actual fact happened..i couldn't control myself.

I really feel bad and didn't do a good job as a mother :(
I am praying hard that i will change myself and control my temper. :(
I hope i wouldn't repeat this again and raise Ryan in a healthy and positive way.