Bobby Shmurda has a line in “Hot N—“ that goes to the effect of “get that money back and spend it on the same thing.” He’s definitely not talking about DJing, but this rule actually applies nicely here: if you’re lacking equipment that can actually aid your DJing, your wisest option is to use your gig earnings to acquire it. This ensures not only that you’re actually honing and applying your skill to make money (you know, like a real job), but that you’re also responsibly reinvesting your profits into your success (you know, like a real business). It’s not to say every penny you get from your gigs has to go to serious purchases, but by using your hard-earned profits to galvanize your worth as a DJ, you’re only adding to your reputable status.