The only way to achieve that is to create more value for your clients with the same resources you have now.
The only way to get that is to share all the work of running the business with the other people in it.
The only way to do that effectively is to properly delegate responsibility and consequences to your team, so they can get on without you.
The only way to do that sustainably is to empower them with a clear promise of value, a high-level customer experience process to follow and the freedom to interpret it and evolve it in their own style.
That takes investment. Of time, energy, and money. But the rewards are exponential.