any advice to earn extra money ?

i'm a member or neobux, clixsense, wordlinx and trekpay. i'm just starting and very hopeful that I will earn big time in the next few months.. im planning to leave my 8-hour job soon to concentrate in being a mom.. i have consulted a friend regarding earning extra money too and she believes that if you want a bigger earnings, you need to make a sale.. we'll she has a point.. but i'm not good in sales. :(

There are a lot out there but as you know we can't really post links to sites like those.