It can be extremely nerve-racking doing things that are way out of your comfort zone, but if you want new opportunities to open up in your life you have to make them happen.
Even though I already have a part-time job, I'd noticed a chance for some lucrative casual work; ideal for someone self-employed like myself. Rather than worry about not being right for the role or getting stressed out over how to fit it in around my main income source, I've bagged myself a highly sought-after interview.
Maybe I won't be one of the lucky few who are offered a position.... but I've already overcome the first hurdle by getting a foot in the door. Whatever the final outcome, I'm confident that this is the start of something exciting.