How do i stop cutting myself all the time???????

I have really bad deppression and sometimes i get so fuc*ing pissed and take it out on myself or my covers and this time i went too far i got a nail from my brothers room and then i went to my room and started to cut and blood tripped everywhere on my bed and the next morning i woke up and it was all purple i didn't even think i cut that deep but obviously i did. It has been hurting really bad i put alcohol and peroxide on it... Im 14 and i don't want my rents to find this out they will be so pissed and my mom wll make me go to her pastors counseling... I really want to stop cutting but today i got pissed off and really deppressed i barely could speak and the only thing that helps me is too cut deep somehow it relieves my stress and sometimes i like to tear up my covers with the nail or razor it relieves my stress too..