No, you do not pay yourself from profit - profit is what is left after all bills are paid and being the management and labor of the business you are an expense just like marketing or gear is.
Seems everyone thinks 'profit' is their paycheck and that kind of thinking will sink your business in a hurry. No, profit can be considered the payment for the investment you made in the business, the return on the gear you buy, the risk you're taking with that investment.
You own your gear (no debt) so you figure you do a gig for $200 and you have $200 in profit. Hardly. You have $200 in revenue or sales.
If you spent money on advertising, phone, mileage, music, insurance you have expenses that come out of that $200. So great, the $150 left over is profit,right? Hardly.
You spend time buying music, practicing, eduction, marketing, prepping for a gig, time spent selling the client - all that time needs paid for as well as the time to pack/drive/setup/perform.
If you did those things for me you'd want paid for them, right? My profit comes after paying you then as you're an expense to me...so why are you not an expense to your company?
So how many hours do you spend doing all that stuff? times what you want paid ($20/hour?More? less?) and suddenly you may find you're business isn't making any profit at all!
Don't be fooled into thinking that to be successful you need to be in the service of the wealthy or chasing the most ostentatious of events. That is very far from the truth.
First get a realistic assessment of the reality of all activity to which your skills or knowledge can be applied. If you do not have an educated perspective on this then seek out a consultant or staffing agent to assess your skills and potential. They can provide you with a profile of all the types of work that you could be doing. That will allow you to assess the cash flow and income potential from a variety of realistic each verticals.
If you settle exclusively on something very narrow such as "weddings" then it should be a truly informed choice and not because of a faulty assumption that this is an area where wealthy people like to throw money away.
Many entertainers centered entirely on weddings are either part-time or have additional significant ways to expand their participation in that market. They may have relatives who are photographers, caterers, decorators, etc. and are able to greatly expand the income and profit potential of any one sale beyond the scope of DJ entertainment. This is core capacity and resourcefulness is very different than an "up sell" which is simply a function of inventory.
Cash flow comes from continuous and self sustaining business operations and your wages come from profit. It matters not where you find that profit. So don't allow your self to get bedazzled by glitter and glam. Do some serious research about your own skills and the location or market you are in. There is no shortage of 30-something braggarts who claim to be working smarter not harder while still living with mom.