Marketing. When operating as a consultant, you won’t necessarily be marketing your company; you’ll be marketing yourself. You’ll have to “package” yourself in a way that makes people trust you. For instance, if you’re marketing yourself as a financial consultant, ask yourself why someone would trust you with their life savings, and then figure out a way to convey that to potential clients. It might be in the form of a brochure, a portfolio, a sales letter, or all three.
If you live in an area where Uber or Lyft operate, why not become a driver? If you're looking to make some short-term cash, you can definitely rake it in by working for one of these popular car-hire apps. As long as your vehicle fits within the specifications of their program, and you have a clean license, you could do this on the side, especially if you're in a crunch for cash.
Persistence and Commitment. You’ll need to have a good amount of persistence while pursuing freelance writing gigs. This business is subjective, and while one person may love your writing, another may not. Do your best to always produce good, solid copy and hold on to your commitment to do the best you can for your clients. Just by committing to do those two things, you’ll be miles ahead of your competition.
Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online.