"...what is the right way then to measure yourself and your company that everyone can understand and agree on?"
Valuation only matters when investments are involved. Also, valuation can be inflated, and that could also bee harmful to a company. So, unless your company fits into a specific type that requires investment, it may not matter so much.
What Max Lamb said was great. A company/business can be judged by its revenue, profitability and sustainability of these two things. In pure capitalistic terms, those are the only things that matter. In fact, valuation of a company, in most circumstances, is calculated ("guesstimated" is more accurate) from the revenue (using a multiplier/NPV etc.) and/or EBITA. Except for a liquidation event where the valuation becomes set in stone at least for a brief moment, the valuation is a guesstimate number that can even be negotiated on. Given that, how valuable, really, is the valuation?
There is one more thing to consider: Impact. Is your company changing how people do things (creating innovation that may bring future values?)? Is your company helping a lot of people? Are you changing how people used to do certain things en masse? If so, that's another way that any one with any business sense would understand.
Besides that, I brought that up because this is a measure that also makes a lot of sense for non-profit that I have been honored to be involved in. These organizations do not have profit motive, but they do make impact on lives, while being financially sustainable. Showing how many lives they have touched, and what kind of impact they have had on those lives is absolutely understandable. In fact, it may even move the audience more than big numbers on a balance sheet, depending on your audience.