Best assertiveness supplement in 2026?

So whenever I’m in situations where I need to be assertive, I follow through and achieve my goal.

But after I still feel this need to stay in that state, leaving me with lingering adrenaline that makes it hard to sleep. It’s like this unfocused unassertive energy that just wants to run away (no rumination).

It never quite feels like a natural part of me. When I take ashwagandha, L-theanine, or phosphatidylserine, I actually get frustrated because I don’t want to feel calmer, but I want to lean into that assertive mindset.

Other than coffee with L-theanine (which helps a bit), is there any supplement that supports this?