Consistently tell your clients who you're suited for, not who you're looking for; not using minimums, but professionalizing using AAA. A top client has the assets, the attitudinal qualities, and the advocacy to make them an ideal client. When a client knows who you are suited for, they feel they are doing a suitable friend a disservice by not introducing them to you. They're an advocate for you and your process, but they're also an advocate for the friend.
Do you know who you are best suited for? Do your clients? Talk with my team and I to better understand, and communicate this. This is the starting point of the Blue Square Method: https://www.paretosystems.com/blue-square.html