Affiliate Marketing is Essential for Freelancers

When you freelance, you have one of life's most important assets - time, at your disposal.

For this reason, you should always try to utilize every working moment you have towards maximizing your revenues [Note - I say, "working moment", which is the time you allocate towards "work", not your leisure or family time].

Now, sites like Upwork or Fiverr are just one of your avenues for making money online.

Instead of focusing solely on them for your earnings, you should look to affiliate marketing as a great source of income augment.

As you become good at it and manage to reap good rewards from your affiliate marketing efforts, you may soon find it to be sufficient enough to replace all the time, effort, and money you were investing into freelance sites like Upwork, especially given the way the latter has started bleeding freelancers dry for their token ("connects") money.

Among affiliate platforms, you should definitely consider Amazon. While it is by no means easy to make money quickly as an "Amazon Associate", it is not that hard either. 

TradeTracker is another affiliate marketing platform I highly recommend to freelancers, especially for those dabbling in the travel niche since there are excellent travel segment clients such as Air France that you can promote on TradeTracker.