I really like the use of negative space, like the arrow in the FedEx logo. With Strong Mind, that might work best if they're stacked and we can somehow incorporate strength, gaining a mental edge, and/or peak performance and growth. Like with Strong Mind you will make a dynamic change in your performances.
My slogan right now is either:
Peak Performance Starts with A Strong Mind
Increase your mental toughness through science based consulting and exercises.
If we went with a pictoral or abstract mark, I'd like it to represent strength and power, strategic thinking, etc. I'd be impressed if you could incorporate a brain into the logo, but I haven't seen that really work (an example of the worst is the picture of the brain lifting weights, not good!).
I REALLY like the two example logos I chose, because those subtley send the message of what those companies do! You know if it's possible to do different performance domains celebrating but then folded into the shape of a brain, that might be cool (or overwhelming!). I hope I have given you enough information and hopefully I didn't contradict myself too much!
Lastly, while my industry is largely sport (my degrees are in sport psychology), I'd like to not limit myself to just sports and really be a performance psychology consultant or mental toughness consultant. And my hope is that my logo can represent that.
Thank you in advance for working on this logo!