You don’t. Like anything else in life, you can never be certain whether something will work.
Maybe you can start small. Try out one session. What’s the worst that could happen? You will lose some money and 90 minutes of your time.
But if it helps, even partially – imagine the difference it would make in your life!
Ask yourself if this possibility of success is big enough to take a small risk.
If you need my client references, check out the home page. I can connect you to some of my past clients too, if that helps. Let me know when you message me.