Affiliate Marketing Secrets

Hi there, I have tried many online money making methods such as affiliate marketing and drop shipping but the only method I have ever had success with is importing goods and selling them on eBay.
I have many ideas and jus need pointed in the right direction from an experienced individual.
Which of these would be the easiest and quickest method to start making a decent part-time/full-time wage as I don’t think I could go back to eBay;
1. Aprice comparison affiliate website for physical products online
2. An Amazon associate product review site
3. An Adsense content website on niches I am knowledgable on
4. Write an eBay ebook for clickbank
5. A casino affiliate site
6. CPA affiliate site for products/services on something like affiliate window
I just can’t decide what to start to get to work on…
Any help would be very much appreciated.