The easiest way to 10x is to work 80 hours per week, but make sure you get paid for 80 hours per week, not just 40. I'm a workaholic, so I've been doing that for years on end.
I work multiple C2C contracts and make sure that the work that I do overlaps heavily between clients. I only take on clients that are all in on terraform and lean heavily on AWS managed services. With those two keystones in place, the value I can provide clients is far in excess of what they normally would get because I get to see it all. I run into an issue at Client A, and I put things in place at Client B to mitigate that issue before it even occurs. The DR solution I design for Client B is mostly copy/paste for Client C with minor adjustments and all the lessons from having just completed a DR failover test for Client A.