Is that the wrong question?
You can hire an outside firm to help you. They will most likely offer you a brilliant set of short-term tactics, which, may work for awhile. They will even want to call it a strategy. I suppose it is a strategy of sorts—a short-term, action-oriented strategy.
This can feel like the perfect solution, because you have very likely already spent years rolling up your sleeves and pushing through to the next level. You may feel like, with this plan, you finally have some real help at the executive level, and you may. But I can promise you there is a far more efficient path to evolve a business. I will also promise you that to do what I suggest will make you feel like you are going backward in order to go forward; so let me explain further.
A strategy that is rooted in tactics will work within a given set of finite circumstances. Once those circumstances morph into something new, the strategy will need to be re-created rapidly.
Strategic intent and strategic objectives should guide tactics.