Im writing my essay on Onomania but i cant come up with the important points to talk about
Do you mean oniomania, the compulsive desire to shop?
If so, then you should define it, describe the symptoms, indicate any known causes, and explain the results of this disorder.
You'll find some good information in some of these sites.
http://www.google.com/search?hl=en&rlz=1G1GGLQ_ENUS362&ie=UTF-8&ei=hztvS7mRBdWM8Aar3t2HBg&sa=X&oi=spell&resnum=0&ct=result&cd=1&ved=0CAYQBSgA&q=Oniomania&spell=1