Within affiliate marketing in 2013 you're going to run into a major problem. That major problem is going to be figuring out how to pick the best niches, the most long lasting niches, and the most selling niches in 2013. As we slowly start to get involved in affiliate marketing, it seems as if the job field is slowly dying. This is merely just an optical illusion, because our patience and belief that we can strike it rich is really what is dying.

But let me ask you this..

Have you picked a niche that will forever be involving and relevant? Have you chosen a niche that will always be updated with the times and needs of the customer? If you aren't sure, then this is going to send huge problems your way. It is vital you choose a niche that will be always updated with new programs/products to sell that evolve with the customers needs. You need a niche that will always be relevant and craved by the customers, as this will guarantee you a consistent and solid amount of sales.

Now I have my personal three favorites

1. Make more Money- This will ALWAYS be relevant and popular. The reason behind this is that, no matter the income, people will always want more money. Whether it be from working at home or selling things online, the richest want to get richer and the broke don't want to be broke anymore. Money is the root of all evil, but it's also what we all need to live our lives. With money being a necessity in life, this niche of "making more money" will be as relevant and needed as oxygen/water/food is.
2. Addictions- Alcohol, tobacco, coffee (caffeine), and gambling are all GREAT niches. Being that they are addictions, they give way to a recurring or non-refunding affiliate marketing niches. It's hard to find a program within this niche to dedicate yourself to and promote, but once you find one that you can love and promote, you will see success. Addictions will always exist and so will the money to be made within the addiction type niche.
3. Health- Obesity, heart problems, quit smoking, and muscle gaining will always be prevalent niches as long as the human race exists. People always will think they are too big/too small, have an addiction that requires help, or want to better their appearance. As long as you are alive to promote, this niche will be at your hand to make money.

To Conclude

One of the best ways to become successful as an affiliate marketer is to promote one of the top three niches. These niches are everlasting, profitable, and at your hands to use anytime as long as the internet exists. There will always be money to be made within the make more money, addictions, and health categories. Do your research, get ranked in Google, and promote one of these three and you will see a recurring income for a lifetime.