Give up যন্ত্রপত্র account?

I want to মোছা my YouTube account because I feel that I'm not নিরাপদ anymore. But I figured that I also had to মোছা my:
Web History
গুগুল Talk
and GMAIL?!

Okay, I will defineatly give up my YouTube account, but I JUST CAN'T মোছা MY GMAIL!!

So.. WHAT DO I DO?!