how to convert clickbank sales from blog

Hi friends,
I am running a health blog named https://playwithhealth.com . it is over 1 year old website. I start using clickbank.com from may 2018 and made 150$ in 2 months. but after july did not made any single penny.

kindly give me suggestions, what should i change or add in my website to convert them.

your help will be highly obliged

thanks

vikas